- Imprint Cytologic Feature of Pleuropulmonary Blastoma: A Case Report .
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Mee Sook Roh, Ji Young Seo, Gi Yeong Huh, Pill Jo Choi, Sook Hee Hong, Jin Sook Jeong
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Korean J Cytopathol. 2001;12(1):39-43.
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 Abstract
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- Pleuropulmonary blastoma (PPB) is an unusual intrathoracic blastoma presenting in childhood and characterized by a biphasic neoplastic population of undifferentiated, small round blastemal cells and larger spindle-shaped sarcomatous cells with entrapped benign epithelial-lined structures. We experienced the cytologic features of PPB in imprint smear from the pleural-based huge mass of the middle lobe of the right lung in a 4-year-old boy. The smears showed high cellularity composed of small ovoid blastemal elements and scattered spindle mesenchymal tumor cells. Lobectomy and pathologic investigation confirmed the diagnosis. PPB seems to be a tumor in which accurate diagnosis may be achieved by cytology if appropriate clinical information were given.
Timely and accurate diagnosis of PPB by cytology paves the way for attempting preoperative treatment in future cases.
- Balloon Cell Malignant Melanoma: A case report.
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Ji Young Seo, Soon Young Kim, Jeong Hee Kang, Young Ok Kim, Bang Hur
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Korean J Pathol. 1999;33(7):537-539.
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Abstract
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- Balloon cell malignant melanoma (BCMM) is a rare histologic variant of malignant melanoma, which is composed either predominantly or entirely of large clear or foamy cells. The incidence of balloon cell malignant melanoma is about 0.15% of all cutaneous malignant melanomas. Recently, we experienced a case of cutaneous balloon cell malignant melanoma in the right lower abdomen with right inguinal and both axillary lymph node metastasis in a 56-year-old man. The cutaneous lesion was 4.5 3.5 cm in size, a well-demarcated black nodular mass, involving abdominal skin and subcutaneous tissue. The tumor was histologically composed of two types of tumor cells: predominant clear cell and focal, pigmented spindle cell. The nodal lesion was composed entirely of clear cells. Both clear and spindle cells showed positive reaction for S-100 protein and HMB-45 on immunohistochemistry.
- Epithelioid Leiomyosarcoma of Retroperitoneum: A case report.
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Myeng Sun Park, Ji Young Seo, Hae Jin Jeong, Bang Hur, Man Ha Hur
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Korean J Pathol. 1999;33(2):141-144.
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Abstract
- Epithelioid smooth muscle tumor is relatively rare and potentially malignant, especially in retroperitoneum.
Distinct criteria for malignancy still have not been clarified in this epithelioid variant arising in retroperitoneum. We report a deceptively benign-appearing epithelioid leiomyosarcoma in a 50-year-old female. She was admitted with abdominal discomfort and dysuria. Abdominal CT showed a well-demarcated, 10 10 cm sized, solid mass in retroperitoneum. Concomitant metastatic lesions were noted in right lung field. Surgical excision of retroperitoneal mass and right lung lobectomy were performed. The retroperitoneal mass showed yellowish-tan, well-delineated and lobulated appearance. Histologically, this tumor was composed of predominantly epithelioid, round to oval cells with distinct clear cytoplasm and slightly atypical nuclei.
Mitosis was rare (0~1/50 HPF). Lung lesions were morphologically similar to that of retroperitoneum.
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