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Case Reports
- Effusion Cytology of Ki - 1 Positive Anaplastic Large Cell Lymphoma: A Case Report.
- Mi Sook Lee, Mi Ja Lee, Yu Kyung Jeong, Sung Chul Lim, Keun Hong Kee, Ho Jong Jeon
- Korean J Cytopathol. 1995;6(2):163-168.
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Abstract
PDF - Ki-1 positive anaplastic large cell lymphoma is a newly described high-grade lymphoma and is defined by histopathological and immunologic criteria. We experienced a case of systemically involving Ki-1 positive anaplastic large cell lymphoma in a 44 year-old female which initially manifested as pleural effusion. Abdominopelvic CT scan showed the evidence of marked lymphadenopathy in retroperitoneal and both external and inguinal lymph nodes. On cytologic examination of pleural fluid tumor cells revealed pleomorphic large isolated cells with prominent nucleoli and abundant cytoplasms. The nuclei were large with irregular profiles including some deep invaginations. Also. occasional multilobed/multinucleated and binucleated nuclei were seen. Immunohistochemical examination was performed to differentiate from the undifferentiated adenocarcinoma. Hodgkin's disease, non-Hodgkin's lymphoma and malignant histiocytosis. The neoplastic cells were positive for leukocyte common antigen. CD3 CD30(ki-1) but negative for cytokeratin. epithelial membrane antigen. and CD15. A histologic diagnosis of Ki-1 positive anaplastic lymphoma was made by biopsies of the inguinal lymph node, polypoid lesion of the stomach and cecum.
- Ki-1 Positive Extranodal NK/T Cell Lymphoma, Nasal Type, Mistaken as Dermatomyositis: A Case Report and Literature Review.
- Hyun Jung Kim, Eunah Shin, Jung Yeon Kim, Kyeongmee Park, Young Jin Yoo, Seung Sook Lee
- Korean J Pathol. 2007;41(4):278-283.
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Abstract
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- We report a case of a 38-year-old male with extranodal NK/T-cell lymphoma, nasal type, showing unusual clinical and pathological features. The patient was admitted for soft tissue swelling and tenderness in both legs. The patient had been treated intermittently 8 months prior for repeated muco-cutaneous ulcers. A muscle biopsy showed medium-sized atypical lymphoid cells with bizarre nuclei and plump cytoplasm, infiltrating to the skeletal muscle fibers with angiocentricity. The immunoresults were Ki-1+, CD56+, cytoplasmic CD3+, with EBV-in situ hybridization +. The patient rapidly deteriorated and died of sepsis and respiratory failure shortly after initiation of low-dose chemotherapy. A careful review of previous biopsies revealed scarce atypical lymphoid cells around vessels with similar immunoprofiles without the presence of Ki-1 positive cells. This case emphasizes that an extranodal NK/T-cell lymphoma may have a dermatomyositis-like diffuse presentation. Ki-1 co-expression can be an unexpected event in a process of the disease course; however, this should be validated with future studies.
Original Article
- Clinicopathological Analysis of Systemic Anaplastic Large Cell Lymphoma.
- Soo Young Chung, Han Suk Ryu, Jae Soo Ko, Baek Youl Ryoo, Seung Sook Lee
- Korean J Pathol. 2006;40(6):399-405.
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Abstract
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- BACKGROUND
Several studies from western countries have reported variable prognoses for patients with systemic anaplastic large cell lymphoma (ALCL) depending strongly on the expression of anaplastic lymphoma kinase (ALK). However, no prognostic significance of ALK expression in Koreans was reported in a single report regarding these patients, although the number of cases was limited in that study.
METHODS
We analyzed the clinicopathological features of ALK+ ALCL and ALK- ALCL in 30 Korean patients diagnosed with primary systemic ALCL.
RESULTS
ALK expression was detected in 60% of all ALCL patients (18/30), and there was no statistical significance to ALK expression in overall survival. Patients with ALK+ ALCL were younger in age and had negative bcl-2 expression; these differences were statistically significant. Tumors positive for ALK protein and granzyme B expression, and negative for bcl-2 expression with a null-cell phenotype tended to have better survival outcomes, althought this trend failed to reach statistical significance (p<0.2), probably due to the limited number of cases in this study.
CONCLUSION
ALK protein expression and the absence of bcl-2 in tumor cells tend to result in better survival despite the failure of this trend to achieve statistical significance. Further studies that examine potential pathologic prognostic factors combined with the expression of ALK and apoptotic factors such as bcl-2 are needed. Additional larger-scale studies are also needed to conclude that ALK expression has no prognostic significance among Koreans.
Case Report
- A Case of Intestinal Anthrax with Recovery after Surgical Intervention .
- Jong Im Lee, Jung Ran Kim, Dong Hoon Kim, Byoung Ook Jeoung
- Korean J Pathol. 1995;29(2):268-271.
- 1,590 View
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Abstract
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- Anthrax in man is usually cutaneous, resulting from contact with materials derived from infected livestock. Internal organs are infrequently involved,. This report concerns a case of primary anthrax of intestine. The first case of primary anthrax of intestine is to our knowledge in Korea. The patient was a 14-year-old male who has complained of nausea, vomiting and acute abdominal pain. History was otherwise noncontributory except for ingestion raw meat of the dead cattle, one day before the onset of the disease. The cattle presumably died due to Bacillus anthracis in a village Bae-Ban Dong in the city of Kyung ju, Kyung Pook. Among 15 sufferers, 2 cases died 3 days later. Bacillus anthracis isolated from the raw beef, blood samples of two patients and throat culture of one patient. At laparotomy, the peritoneal cavity was full of serosanginous fluid. Right hemicolectomy including partial resection of ileum was done. The bowel was segmentally dilated, hemorrhagic and necrotic, especially at terminal ileum. The mucosa was edematous and largely ulcerated covered with greenish yellow exudate. The intense vascular congestion with hemorrhage and numerous colonization of bacteria were present through the entire wall. The organisms were large, gram-positive and PAS-negative bacilli in long chain. Bacterial emboli were scattered in lymphatics. The other feature was band like lymphoid cell infiltration in ulcer base and submucosal layer. Payer's patches were prominent and the germinal centers were necrotic. Interfollicular spaces exhibited aggregates of numerous atypical lymphoid cells. The cells were five times larger than resting lymphocytes and had several prominent nucleoli and abundant amphophilic cytoplasm. On immunohistochemical staining, most of atypical cells were positive for T-cell marker and Ki-I Ag. The mesenteric lymph nodes were enlarged, showing reactive feature, and the atypical cells were also demonstrated. The patient recovered completely.
Original Articles
- Immunohistochemical Study for Ki-1 and EMA Antigens in Large Cell Lymphoma including Anaplastic Large Cell Lymphoma.
- Soon Ae Oak, Young Hyeh Ko, Jung Dal Lee
- Korean J Pathol. 1994;28(2):135-143.
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Abstract
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- To evaluate the frequency of EM A and Ki-I antigen expression in the large cell lymphoma and to define the histologic characteristics of Ki-1 positive anaplastic large cell lymphoma, 40 cases of malignant lymphoma, diffuse large cell type were immunostained by Ki-I and EMA monoclonal antibodies. Eight cases of large cell lymphomas expressed EMA, among which 4 cases were positive for Ki-I antibody as well. The positive rate for EMA was much higher in T cell lymphomas than in B cell lymphomas. Among 4 cases of Ki-I positive lymphomas, 2 cases showing membrane staining of Ki-1 with prototypic histologic feature of anaplastic large cell lymphoma were classified as Ki-1 positive anaplastic large cell lymphoma(ALCL). Ki-I positive ALCL were T-cell in one and non-T, non-B cell type in the other, respectively. The remaining 2 cases of Ki-1 positive lymphomas showing cytoplasmic staining were classified as both B-cell centroblastic/centrocytic lymphoma and T-cell pleomorphic large cell lymphoma.
- Ki-1 Positive T-Cell Lymphoma of Bone in a Child.
- Hye Seon Ahn, Gil Ro Han, Jin Hee Sohn, Jung Il Suh, Young Hyeh Ko
- Korean J Pathol. 1989;23(4):470-475.
- 1,671 View
- 14 Download
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Abstract
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- Ki-1 monoclonal antibody is a well known marker for Reed-Sternberg cells in Hodgkin's disease, but also occasionally reacts with activated lymphoid cells of either benign or malignant nature. Recently, Ki-1 antibody positive Non-Hodgkin's lymphoma, usually of large cell and/or polymorphous type, has been reported in the lymph nodes, skin, soft tissue, and stomach, but not in the bone. We report a case of multifocal primary bone lymphoma in a seven-year old body involving the left shoulder and right frontal bone, which proved to be a large cell, polymorphous lymphoma, helper T-cell type expressing Ki-1 antigen.
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