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Won Mi Lee 19 Articles
The Expression Pattern of Annexin A1 in Urinary Bladder Urothelial Carcinoma and Its Clinicopathologic Significance.
Hojung Lee, Seung Kyu Choi, Young Ok Hong, Won Mi Lee, Sook Kyung Ko, Eun Kyung Kim, Jong Eun Joo
Korean J Pathol. 2011;45(1):62-68.
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AbstractAbstract PDF
Annexin A1 (ANXA1) is known to be involved in the progression and differentiation of various tumors. However, its significance and role in bladder carcinogenesis has not been fully elucidated. To determine the role ANXA1 plays in urothelial carcinoma (UC), we investigated the expression of ANXA1 protein in normal urothelial tissue, carcinoma in situ (CIS), and UC of the urinary bladder.
Protein expression level of ANXA1 and its subcellular localization were analyzed in 88 cases of UCs and corresponding 24 normal tissues and 24 CISs by immunohistochemistry.
ANXA1 was significantly down-regulated at all subcellular localization in CIS and in the cytoplasm and membrane of cells of UC, compared to normal tissues. No significant correlation between ANXA1 expression level and tumor depth (pT), growth pattern, and recurrence was found. However, cytoplasmic and membranous ANXA1 were significantly up-regulated in high grade than in low grade UC (p=0.02 in cytoplasm and p=0.03 in membrane).
These results suggest that ANXA1 dysregulation is involved in urothelial carcinogenesis and ANXA1 is potentially a marker for the pathologic differentiation of UC.
Primary Malignant Melanoma of the Male Urethra.
Seung Wook Lee, Eun Kyung Kim, Won Mi Lee, Jung Man Jo, Tag Keun Yoo, Jeong Yoon Kang
Korean J Pathol. 2010;44(6):662-665.
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AbstractAbstract PDF
Primary malignant melanoma occurring within the male urethra is very rare. Here we report a case of malignant melanoma of the urethra in a 74-year-old man. He presented with asymptomatic gross hematuria for 5 months. His glans penis and adjacent penile skin had become discolored black 10 years ago. Cystourethroscopy showed a smooth oval-shaped elevated mass in the fossa navicularis. There were no abnormal findings in the proximal urethra and urinary bladder. Computed tomography did not detect any inguinal lymph node enlargement or distant metastases. The patient underwent partial penectomy and ilioinguinal lymph node dissection. Grossly, the distal urethra revealed an ovoid pigmented nodule, that measured 1 x 0.5 cm. Microscopic findings showed a nodular malignant melanoma arising in the urethral mucosa with pagetoid spread to the epidermis of the glans penis. There were no recurrences over a period of 12 months after surgery without chemotherapy. This is the second case of a primary malignant melanoma of the male urethra in Korea.
Enterobius vermicularis Ova in a Vaginal Smear.
Seung Kyu Choi, Eun Kyung Kim, Young Ok Hong, Ho Jung Lee, Won Mi Lee, Sook Kyung Ko, Jong Eun Joo
Korean J Pathol. 2010;44(3):341-342.
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  • 4 Citations
AbstractAbstract PDF
Enterobius vermicularis is one of the most common parasites found in the intestine of humans. The gravid female worms migrate outside the anus to release eggs on the perianal skin. Rarely, they migrate to the genitourinary tract in female patients. We present a case in which pinworm eggs were found in a cervicovaginal smear of a 37-year-old woman. The eggs were elongated oval shaped and flattened on one side. The thick, double contoured birefringent shell stained bright yellow or orange. Some coarsely granular embryos or curved larvae were enclosed in the refractile shell. Empty eggs or wrinkled shells with clumped granular material were also present. Although pinworm eggs are easily identified because of their characteristic morphologic appearance, careful screening is needed due to the frequent masking by inflammatory cells.


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Significance of c-kit and COX-2 Expression in Breast Tissue.
Eun Kyung Kim, Won Mi Lee, Jong Eun Joo, Sook Kyung Ko
Korean J Pathol. 2008;42(3):157-161.
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AbstractAbstract PDF
The proto-oncogene c-kit encodes a transmembrane tyrosine kinase growth factor receptor. Studies have shown that c-kit is highly expressed in normal breast epithelium, but expression is decreased in primary breast cancer. Cyclooxygenase-2 (COX-2) is an inducible enzyme that converts arachidonic acid to prostaglandins. Expression of COX-2 has been reported in malignant tumors including breast cancer. We evaluated the expression of c-kit and COX-2 in benign and malignant lesions of the breast to assess the roles of these proteins in cancer initiation and progression.
We characterized 20 benign lesions, 20 intraductal carcinomas and 70 invasive breast carcinomas. Immunohistochemical staining for c-kit and COX-2 was performed.
Expression of c-kit was detected in 75% of the benign breast lesions, 40% of the intraductal carcinomas and 10% of the invasive carcinomas. COX-2 expression was observed in 80% of the benign lesions, 70% of the intraductal carcinomas and 52% of the invasive carcinomas. Expression of c-kit was significantly correlated with tumor size (p=0.02). COX-2 expression was significantly correlated with negative expression of estrogen receptor and progesterone receptor (p=0.02, p=0.04), Her-2/neu expression (p=0.008) and the high proliferation index (p=0.0002).
Our results suggest that c-kit and COX-2 might be involved in malignant transformation of the mammary epithelium and tumor progression. It is suggested that c-kit and COX-2 can be used as predictive markers and therapeutic targets.
Expression of p34(cdc2), p27(Kip1), p21(WAF1/Cip1) and p53 in Human Breast Cancers.
Dong Hoon Kim, Chan Kum Park, Ho Jung Lee, Won Mi Lee, Eun Kyung Kim, Jong Eun Joo
Korean J Pathol. 2005;39(6):391-400.
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AbstractAbstract PDF
Cell cycle progression is governed by cell cycle regulators and inhibitors such as the cyclin dependent kinases (CDK), p27(Kip1), p21(WAF1/Cip1) and p53. The purpose of this study was to correlate expressions of p34(cdc2), p27(Kip1), p21(WAF1/Cip1) and p53 with the various clinicopathologic prognostic parameters of human breast cancers.
The paraffin-embedded tissue sections from 102 patients with human breast carcinomas were examined by performing immunohistochemical staining. The primary antibodies used for immunohistochemical staining were mouse monoclonal antibody to human p34(cdc2), p27(Kip1), p21(WAF1/Cip1), p53, ER and PR.
The expression rates of p34(cdc2), p21(WAF1/Cip1) and p53 were 29.3%, 40.2% and 49.1% in breast carcinomas, respectively. In normal breast tissues, p34(cdc2), p21(WAF1/Cip1) and p53 were not expressed. The p34(cdc2) was expressed in the cytoplasm of cancer cells. The expression rate of p27(Kip1) was 29.3% in breast carcinomas and 100% in normal breast tissues, so the loss of p27(Kip1) expression in breast cancer was noted. The high expression of p21(WAF1/Cip1) in neoplastic cells was associated with the p53 expression (p=0.03). The expression of p27(Kip1) was correlated with that of the progesterone receptor (PR) (p=0.04) and the expression of p21(WAF1/Cip1) was correlated with that of positivity for estrogen receptor (ER) (p=0.04) and PR (p=0.04). No correlation was demonstrated between the mean patient survival and the expression rate of p34(cdc2), p27(Kip1), p21(WAF1/Cip1) and p53.
The loss of the normal cell growth cycle by the abnormal expression of cyclin dependent kinases and their inhibitors and the steroid hormones may play an important role in human breast carcinogenesis. The p53 dependent p21(WAF1/Cip1) pathway, the p27(Kip1) protein loss and the cdc2 overexpression were important in development and progression of human breast cancer.
Submandibular Soft Tissue Actinomycosis Diagnosed by Fine Needle Aspiration Cytology: A Case Report.
Ho Jung Lee, Dong Hoon Kim, Won Mi Lee, Eun Kyung Kim, Jong Eun Joo
Korean J Cytopathol. 2005;16(1):57-60.
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AbstractAbstract PDF
A patient with actinomyces infection of the submandibular soft tissue was diagnosed by fine needle aspiration cytology (FNAC). A 38-year-old woman presented with a right submandibular mass which slowly grew in size over one month. Clinically and radiologically, the lesion was considered as tuberculous lymphadenitis or cellulitis. The polymerase chain reaction for tuberculosis was done by aspirated specimen but the result was negative. The smears of aspiration cytology showed characteristic colonies(sulfur granules) of actinomyces in inflammatory background. After antibiotic therapy for eight months, the patient has been well, showing no detectable mass. This patient was simply and rapidly diagnosed by FNAC and can avoid unnecessary surgical biopsy.
Localized Amyloidosis of the Ureter: A Report of Two Cases.
Ho Jung Lee, Dong Eun Song, Jong Eun Joo, Won Mi Lee, Dong Hoon Kim, Eun Kyung Kim, Jae Y Ro
Korean J Pathol. 2004;38(3):184-187.
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AbstractAbstract PDF
We report on two cases of localized amyloidosis involving the ureter. The patients were a 64-year-old woman with right upper quadrant pain (case 1) and a 36-year-old woman suffering from left flank pain and intermittent gross hematuria (case 2). An intravenous pyelography of case 1 revealed multiple filling defects in the entire right ureter, whereas retrograde pyelography in case 2 showed diffuse narrowing in the mid and lower portions of the left ureter. Localized amyloidosis of the ureter was diagnosed in the two cases, and both had amyloid deposit in the renal pelvis and the urinary bladder in case 1, and in the contralateral ureter and the renal pelvis in case 2. Right nephroureterectomy was performed in case 1, but a segmental resection of the ureter with preservation of the kidney was administered in case 2. These two cases demonstrate that ureteral amyloidosis can be associated with amyloid deposition in the renal pelvis and the urinary bladder. Although ureteral amyloidosis is a rare occurrence, it should be considered in the differential diagnosis of ureteral obstruction to avoid unnecessary radical surgery.
Uterine Leiomyoma with Massive Lymphocytic Infiltration.
Won Mi Lee, Moon Hyang Park
Korean J Pathol. 2003;37(1):71-73.
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AbstractAbstract PDF
Uterine leiomyoma with massive lymphocytic infiltration is known to be associated with Gona-dotropin releasing hormone (GnRH) agonist treatment. The lymphocytic cells in those cases were composed predominantly of T-lymphocytes. We report an unusual case of uterine leiomyoma with massive lymphocytic infiltration, composed predominantly of B-lymphocytes, without a history of GnRH agonist treatment. A 59-year-old woman underwent a transvaginal hysterectomy for uterine leiomyomas. Microscopically, the leiomyoma showed a massive infiltration of the lymphocytes, histiocytes, and also showed scattered plasma cells and many lymphoid follicles. The lymphocytic infiltrates were confined to the leiomyoma. These lymphocytic cells mainly represented the B-cell phenotype. She had no history of GnRH agonist treatment. To the best of our knowledge, This is the first reported case in Korea.
Idiopathic Hypertrophic Spinal Pachymeningitis: A Case Report.
Eun Kyung Kim, Wan Seop Kim, Jong Eun Joo, Won Mi Lee, Byng Kwan Moon, Hyun Sook Kim
Korean J Pathol. 2002;36(4):278-280.
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AbstractAbstract PDF
We report a case of idiopathic hypertrophic spinal pachymeningitis in a 56-year-old woman who complained of a tingling sensation and progressive weakenss of both legs since 6 months prior, and then was unable to walk for 1 week. Magnetic resonance imaging showed a low signal intensity of dural and epidural mass in the T7-T11. The mass was concentrically compressing the spinal cord and extending to the paraspinal area through the intervertebral foramina. Total laminectomy from T7 to T12 and mass removal were done. The mass was composed of markedly thickened dura mater. Microscopic examination showed fibrous thickening with hyalinization and infiltration of chronic inflammatory cells, mainly lymphocytes. Idiopathic hypertrophic spinal pachymeningitis is a rare disease causing progressive paraparesis that can resemble other disorders associated with spinal compression.
Two Cases of Invasive Carcinoma of the Breast Composed Mostly of Signet Ring Cells in the Fine Needle Aspiration Cytology.
Won Mi Lee, Wan Sup Kim, Eun Kyung Kim, Jong Eun Joo
Korean J Cytopathol. 2002;13(2):88-92.
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AbstractAbstract PDF
Scattered single cells or variable sized clusters of signet ring cells in the aspirated smears of breast lesions are almost exclusively associated with carcinoma. The signet ring cells are defined as those containing a prominent intracytoplasmic vacuole or amorphous cytoplasm diffusely dispersed with mucin. The primary signet ring cell carcinoma of the breast behaves more aggressively than carcinoma without signet ring cells. Therefore, it is very important to make a correct diagnosis of signet ring cell carcinoma. Fine needle aspiration cytology is useful for diagnosis of breast lesions including signet ring cell carcinoma. We report two cases, which showed mostly signet ring cells in the aspirated smears of the breast. One case consisted of numerous individual signet ring cells and variable sized cell clusters in rather mucoid background. The tumor cells had abundant amorphous cytoplasm filled with dispersed mucin or occasionally mucin vacuoles(PAS +) and eccentric nuclei. The resected mass revealed mucinous carcinoma. The other showed the cytologic findings of low cellularity, and small loosely cohesive signet ring cell clusters with mild nuclear pleomorphism. It was confirmed as lobular signet ring cell carcinoma in the resected tumor.
Cytologic diagnosis of a chordoma without physaliferous cells: A case report.
Yun Hee Jin, Chan Kum Park, Won Mi Lee, Moon Hyang Park
Korean J Cytopathol. 2001;12(2):131-134.
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AbstractAbstract PDF
Cytologic features of conventional chordoma have been described and most reports emphasize the presence of large cells with numerous well defined cytoplasmic vacuoles or physaliferous cells. We report fine needle aspiration cytologic (FNAC) findings of a case of chordoma without physaliferous cells. The smear was cellular and composed of large cohesive clusters or individually scattered cells in mucinous background. The round or cuboidal cells had centrally located nuclei with fine granular chromatin, inconspicuous nucleoli, and occasional vacuolated cytoplasm. Mild to moderate pleomorphism was noted. Physaliferous cells are extremely helpful when present in cytologic material, but they are not necessary for diagnosis. Thus clinical history, roentgenographic appearance, and exact location of the lesion are required for the successful interpretation of presacral aspirates together with cytologic findings.
Primary Hepatic Leiomyosarcoma.
Won Mi Lee, Chan Kum Park, Eun Kyung Hong, Moon Hyang Park, Jung Dal Lee
Korean J Pathol. 1998;32(12):1092-1094.
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Primary hepatic sarcoma is a rare tumor, with fewer than 60 previously reported cases. It is thought to arise from hepatic connective tissue or vascular channels. The tumor is located usually in the intrahepatic area. Pedunculated or bulging lesion is also reported. We report a case of primary leiomyosarcoma of the liver occuring in a 62-year-old Korean woman. A pedunculated, 21 16 cm sized mass is located in the left lateral segment of the liver. Microscopically, the tumor is hypercellular and composed of elongated, partly pleomorphic spindle cells with blunt-ended nuclei, which are focally reactive for muscle specific actin. Mitotic figures are 5/10 high power fields (HPFs). No other primary site is recognized on clinical study.
Prognostic Significance of the Tall Cell Variant of Papillary Thyroid Carcinoma: Expression of p53, bcl-2 & Leu-M1 proteins.
Won Mi Lee, Joo Seob Keum, Eun Kyung Hong, Moon Hyang Park, Jung Dal Lee
Korean J Pathol. 1998;32(11):1000-1007.
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Papillary carcinoma of the thyroid is a well differentiated neoplasm and usually has a good prognosis. However, a subset of morphologically distinct papillary carcinoma has bad prognoses. The tall cell variant of papillary carcinoma (TCPC), characterized by tall columnar cells with a height at least twice the width, is the one of these. In order to differentiate TCPC from usual papillary carcinoma (UPC) in terms of prognosis, we performed immunohistochemical studies for the expression of p53, bcl-2 and Leu-M1 proteins in 25 cases of TCPC, 26 cases of UPC and 14 cases of poorly differentiated, solid type papillary carcinoma (SPC) with an analysis of clinical parameters. The nuclear expression of p53 was noted in one case each of UPC and TCPC. The cytoplasmic p53 expression of TCPC, UPC, and SPC was observed in 17/25 cases (68%), 14/26 cases (54%), 3/14 cases (21%), respectively. bcl-2 expression was 19/25 cases (76%), 18/26 cases (69%), 5/14 cases (36%), and that of Leu-M1 was 21/25 cases (84%), 18/26 cases (69%), 4/14 cases(29%), respectively. There were no statistical significance in the expression of those immunoproteins among these three groups (p>0.05). The p53 protein was consistently expressed in the cytoplasm rather than nucleus in this study and was very well correlated to bcl-2 positivity (p<0.01). There were no statistical significance in any clinical parameters examined among these three groups (p>0.05). In conclusion, TCPC can not be separated from UPC as a distinct entity in this study and the cytoplasmic expression of p53 protein provides another mechanism of p53 inactivation in tumorigenesis of the thyroid papillary carcinoma, possibly by bcl-2 related mechanism.
Extrapulmonary Silicosis: A case report.
Won Mi Lee, Se Jin Jang, Eun Kyung Hong, Jung Dal Lee
Korean J Pathol. 1998;32(7):540-542.
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A case of extrapulmonary silicosis involving abdominal lymph nodes in a 62-year-old man is presented. The patient underwent subtotal gastrectomy and regional lymph nodes dissection for gastric adenocarcinoma of clinical stage III. On gross examination, two separate gastric adenocarcinomas and multiple enlarged lymph nodes mimicking metastatic lesion were noted. Microscopic examination of the enlaged lymph nodes revealed characteristic sclerohyaline silicotic nodules without metastatic adenocarcinoma. Chest roentgenogram showed diffusely scattered multiple tiny nodular lesions in the entire lung fields, particularly the posterior side of both upper lung fields. He had worked in a mine for 18 years and had been exposed to silica for 5 of those years. We report incidentally found, unusual case of extrapulmonary silicosis.
Intraductal Variant of Peripheral Cholangiocarcinoma of the Liver A report of three cases.
Won Mi Lee, Seok Hoon Jeon, Eun Kyung Hong, Moon Hyang Park, Jung Dal Lee
Korean J Pathol. 1998;32(3):222-225.
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AbstractAbstract PDF
Intraductal variant of peripheral cholangiocarcinoma is extremely rare. This variant shows intraductal growth and intraluminal extension without any infiltrative growth. The mode of intraductal growth is not known. The prognosis of this variant is better than that of usual cholangiocarcinoma. We report three cases, one of which is associated with Clonorchis sinensis (CS) infection. The tumors were entirely confined within the dilated peripheral tributaries of the intrahepatic bile duct. Microscopically, the tumors were well to moderately well differentiated, with a papillary or a micropapillary growth pattern. Focal clear cytoplasmic change and mucin production were noted. The tumors showed intraductal spreading without any invasion to the liver parenchyme. Mucosal hyperplasia and dysplasia were noted in the adjacent ducts. The authors assume that intraductal cholangiocarcinoma is a distinct subtype, and persistent irritation, such as, CS infection may undergo a malignant transformation through mucosal dysplasia.
Cytopathologic Analysis on Fine Needle Aspiration Cytologic Misdiagnoses of the Thyroid .
Chan Pil Park, Joo Seob Keum, Won Mi Lee, Moon Hyang Park, Jung Dal Lee
Korean J Cytopathol. 1998;9(2):169-180.
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AbstractAbstract PDF
Fine needle aspiration cytology(FNAC) has been used effectively as the initial modality in evaluating various thyroid lesions. We correlated cytologic and histopathologic features to investigate the diagnostic pitfalls of FNAC of the thyroid. A total of 1,593 FNACs of the thyroid were diagnosed at the Department of Pathology, Hanyang University Hospital, from January 1993 to December 1997. There were 963 cytologically benign cases(60.5%), 97 suspicious cases(6.1%), and 75 malignant cases(4.71%). The remaining 458 cases(28.8%) were unsatisfactory. Subsequent surgical resection was done in 192 cases. Seventy-two cases(37.5%) were cytologi cally diagnosed as benign, 45 cases(23.4%) suspicious, 56 cases(29.2%) malignant, and 19 cases(9.9%) unsatisfactory. Histopathologically, 101 cases were benign(11 thyroidites, 52 adenomatous hyperplasias, 34 follicular adenomas, and four Hurthle cell adenomas), and 91 cases malignant(72 papillary carcinomas, 16 follicular carcinomas, one medullary carcinoma, one anaplastic carcinoma, and one granular cell tumor). After excluding 19 unsatisfactory cases, 63 were misdiagnosed. They included 17 benign(three thyroidites and 14 adenomatous hyperplasias), 27 suspi cious(16 follicular adenomas, four Hurthle cell adenomas, and seven follicular carcinomas), and 19 malignant(16 papillary carcinoma, one medullary carcinoma, one anaplastic carcinoma, and one granular cell tumor) lesions. The accuracy rates in the benign, suspicious, and malignant categories were 54.9%, 49.8%, & 92.8%, respectively. The cytological pitfalls were as follows: (1) bloody background, (2) crowded follicular cell clusters indistinguishable between follicular neoplasia and adenomatous hyperplasia, (3) papillary structure, irregular nuclear membrane and pleomorphism mimicking those of papillary carcinoma, (4) indistinct eosinophilia in follicular epithelial cells, (5) unusual cellular components not commonly seen in FNACs of the thyroid.
Fine Needle Aspiration Cytology of Glycogen-Rich Clear Cell Carcinoma of the Breast: A Report of Two Cases .
Wan Seop Kim, Won Mi Lee, Eun Kyung Hong, Moon Hyang Park, Jung Dal Lee
Korean J Cytopathol. 1998;9(2):213-219.
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AbstractAbstract PDF
Glycogen-rich clear cell carcinoma of the breast is an unusual variant of carcinoma with a recorded incidence of 1.4-3% of breast carcinomas. The cytologic characteristics have not been well described. We report two cases of glycogen-rich clear cell carcinoma with corresponding fine needle aspiration(FNA) cytologic findings and compare them to infiltrating ductal carcinoma and other clear cell malignancies with a review of literature. One was a 62-year-old woman exhibiting a palpable mass of the right breast. The smears showed atypical tight cell clusters and individually scattered single cells containing foamy or clear abundant cytoplasm with well defined cytoplasmic margins. Mild to moderate nuclear pleomorphism and a prominent nucleolus were present. The other was a 42-year-old woman who was admitted with a right breast mass. The smears showed moderately cellular, tightly cohesive tumor cells. The cytoplasmic outline was generally well demarcated. The tumor cells contained foamy to clear abundant cytoplasm with large and small vacuoles. The nuclear pleomorphism was marked. Both tumors resected by modified radical mastectomy, were diagnosed as glycogen-rich clear cell carcinoma. Histologically, the clear cell nature of tumor cells were not characteristic enough to predict this type of the tumor. Some cytologic features can be distinguished other clear cell breast cancer from glycogen-rich carcinoma. Recognition of these unusual patterns in a breast FNAC should raise the suspicion of a clear cell carcinoma including glycogen-rich subtype. Cytological localization of glycogen using PAS and D-PAS staining may permit the correct identification and differential diagnosis of this tumor.
Cytologic Features of Glassy Cell Carcinoma of the Uterine Cervix: Three Cases Report.
Seok Hoon Jeon, Seung Sam Paik, Won Mi Lee, Se Jin Jang, Yong Wook Park, Moon Hyang Park, Jung Dal Lee
Korean J Cytopathol. 1996;7(2):197-201.
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AbstractAbstract PDF
Glassy cell carcinoma is an unusual neoplasm of the uterine cervix that accounts for 1~2% of all cervical malignancy. It is a rapidly progressive and biologically aggressive disease with poor response to therapy. This tumor is considered to be a poorly differentiated mixed adenosquamous carcinoma. The cytologic findings are characterized by tumor cells arranged predominantly in syncytial like aggregates and an inflammatory background. The tumor cells have moderate amounts of eosinophilic or amphophilic cytoplasm, which is often finely granular. The nuclei are relatively large and have fine chromatin with prominent eosinophilic nucleoli. Cytologically, glassy cell carcinoma is most likely to be confused with large cell nonkeratinizing squamous cell carcinoma and with atypical reparative cells. Herein, we report three cases of glassy cell carcinoma of the uterine cervix diagnosed by cervicovaginal smear and confirmed by histologic section with review of literatures.
Fine Needle Aspiration Cytology of Acinic Cell Carcinoma of the Parotid Gland: A Case Report.
Seok Hoon Jeon, Seung Sam Paik, Won Mi Lee, Moon Hyang Park, Jung Dal Lee
Korean J Cytopathol. 1996;7(2):225-229.
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AbstractAbstract PDF
We experienced a case of well-differentiated acinic cell carcinoma of the parotid gland in a 65 year-old woman, which was correctly diagnosed preoperatively by fine needle aspiration(FNA) cytology. FNA cytology smears showed clusters or sheets of monomorphic acinic cells having reticulated or finely vacuolated basophilic or acidophilic cytoplasm. The cellular population was homogeneous or slightly polymorphic, having centrally located, round nuclei with finely reticular chromatin and incon- spicuous nucleoli. Herein we report this case with its histologic features and review of literatures.

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