Dong-Hae Chung

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Clear cell ependymoma was included in the World Health Organization classification of the nervous system in 1993, and all the reported cases, except for two in the spinal cord, were located in the brain, mainly in the supratentorial compartment. Astrocytomas outnumber ependymomas in the spinal cord, and the two entities partly share cytologic findings such(More)
A 50-year-old woman presented with a large cervical polypoid mass. Grossly, the mass occupied a substantial proportion of the cervical canal, measuring 6 cm. Histologically, the mass showed a spindle cell malignancy arranged in large fascicles that penetrated deeply into the fibromuscular wall of the cervix. The spindle cells were immunoreactive for both(More)
A 46-year-old woman with ovarian malignant melanoma had advanced intraperitoneal metastasis, retroperitoneal and inguinal lymph node metastases. Extensive debulking surgery was performed and chemotherapy was given. Microscopically, no evidence of other accompanying tumor, such as teratoma was noted. Detailed examination of the patient failed to identify any(More)
A 38-year-old man presented to our Emergency Department with acute severe abdominal pain; 3 days after, a mesenteric mass had been detected by abdomino-pelvic computed tomography. Emergency laparotomy revealed a mesenteric mass with focal surface rupture. Microscopically, the mesenteric mass was composed of fibroblast-like spindle cells with intervening(More)
Adrenocortical carcinoma is a rare neoplasm and it has an invariably lethal prognosis. We report here on the fine needle aspiration cytologic findings of a solitary metastatic pulmonary adrenocortical carcinoma in a 24-year-old woman. The aspirate smears were very cellular and they were composed of a monomorphic population of large polyhedral cells with(More)
Primary retroperitoneal mucinous cystadenocarcinoma is an extremely rare tumor. Preoperative diagnosis is very diffi cult and the treatment remains controversial. A 37-year-old Korean woman (gravida 0) presented with a huge abdominal mass. Computed tomography scan revealed an 18 × 11 cm sized unilocular cyst with irregular wall thickening and solid(More)
Steroid cell tumors account for less than 0.1% of all ovarian tumors. There are three steroid cell tumor subtypes: steroid cell tumor not otherwise specified (NOS), stromal luteoma and Leydig cell tumor. Steroid cell tumor, NOS, is the most common type and has malignant potential. This report describes a case of an ovarian steroid cell tumor, NOS. A(More)
Osteofibrous dysplasia (OFD)-like adamantinoma is a rare skeletal tumor that is characterized by the predominant OFD-like pattern with scattered epithelial nests. Adamantinoma shares clinical features (the majority of lesions in the tibia and the prevalent age group), radiologic findings (radiolucency with sclerotic shadow), and pathologic similarities(More)
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