Small cell osteosarcoma is a rare form of osteosarcoma and the histological differential diagnosis from other small round cell tumors (SRCTs) is difficult. The immunohistochemical stain for MIC2 has been considered an useful diagnostic marker for Ewing's sarcoma and primitive neuroectodermal tumors but recently, other SRCTs such as malignant lymphoma and embryonal rhabdomyosarcoma also showed positive reaction. Therefore, the usefulness of MIC2 must still be proven. We experienced a case of small cell osteosarcoma of the mandible in a 25-year-old man. Histologically, the tumor consisted of small round cells that resembled those of Ewing's sarcoma. Immunohistochemically, the tumor cells expressed diffuse strong positive reaction for MIC2 gene products. However, the scanty foci of lacy osteoid material between the tumor cells seemed to be diagnostic of osteosarcoma. The histologic and immunohistochemical findings of this case suggest close relationship between small cell osteosarcoma and Ewing's sarcoma.
Adult ; Diagnosis, Differential ; Humans ; Lymphoma ; Mandible ; Neuroectodermal Tumors, Primitive ; Osteosarcoma* ; Rhabdomyosarcoma, Embryonal ; Sarcoma, Ewing*

The cutaneous lymphadenoma is a recently described tumor with a distinctive histologic picture representing a basaloid epithelial proliferation and intraepithelial lymphocytic infiltration; it seems to be a benign adnexal neoplasm of uncertain histogenesis. We documented one example of cutaneous lymphadenoma showing typical histologic features. The tumor typically presented as a well circumscribed nodule with scant or no epidermal connections. The proliferating one consisted of multiple rounded lobules of basaloid cells with some degree of peripheral palisading. There was an intense infiltrate of small lymphocytes within the lobules but few in the stroma. No clear adnexal differentiation is noted. Immunohistochemically, the basaloid cells show weak immunoreactivity for high molecular weight keratin and carcinoembryonic antigen, small lymphocytes for T-cell marker and some dendritic cells for S-100 protein. After surgical resection, we found no evidence of local recurrence or distant metastasis for four years, so we considered this tumor as a benign one and diagnosed as cutaneous lymphadenoma by typical histologic features.
Carcinoembryonic Antigen ; Dendritic Cells ; Lymphocytes ; Molecular Weight ; Neoplasm Metastasis ; Recurrence ; S100 Proteins ; Skin ; T-Lymphocytes

The thickness of the glomerular basement membrane may vary not only in glomerular disease, but also in normal persons according to age and sex. But there has been no data on the normal thickness of the basement membrane in Korea. This study was designed to determine the glomerular basement membrane thickness as a reference value according to age and sex, in 50 cases of minimal change disease obtained from patients aged 2~67 years. Measurement of glomerular basement membrane was made on electron micrograph using an image analyzer. The thickness of each case was estimated by the arithmetic and harmonic mean methods. The mean thickness of the glomerular basement membrane was 291.9 47.9 nm by harmonic mean method and 284.2 43.7 nm by arithmetic mean method. And the harmonic mean thickness of the glomerular basement membrane according to age was 249.1 32.5 nm (1~5 years), 256.6 45.3 nm (6~10 years), 279.2 57.9 nm (11~15 years), 303.2 43.8 nm (16~20 years), 335.3 37.5 nm (21~30 years), and 291.1 22.5 nm (over 30 years), respectively. There was a trend that the thickness of glomerular basement membranes increased with the age till 30 years of age. There was no significant sex-related difference. In conclusion, the mean glomerular basement membrane thickness is comparable to the data from western people and shows a trend of increasing thickness according to the age.
Basement Membrane ; Glomerular Basement Membrane* ; Humans ; Kidney ; Korea ; Nephrosis, Lipoid* ; Reference Values

No abstract available.
Cross Infection*

No abstract available.
Autografts* ; Heterografts* ; Transplants*

Cystadenomas are benign neoplasm in which the epithelium demonstrates adenomatous proliferation. Several morphologic variants of cystadenomas have bean described, including papillary-oncocytic, mucous, and seromucous subtypes. Cystadenomas arising from salivary glands are very rare and seromucous cystadenoma of parotid gland has not been reported in Korea so far. Cystadenomas of the parotid gland usually Present as asymptomatic slowly growing mass and those of the minor salivary glands produce smooth nodules that may be compressible. We performed a superficial parotidectomy in a patient with a seromucous cystadenoma. This may be the first report of seromucous cystadenoma of carotid gland in Korea.
Cystadenoma* ; Epithelium ; Humans ; Korea ; Parotid Gland* ; Salivary Glands ; Salivary Glands, Minor

Primary carcinoma of fallopian tube is very rare tumor, that has an incidence less than 1% in all female genital malignanciea. Yhe symptoms are not distinctive, and in moat cases, they are so slight that the disease is well advanced when the diagnosis is made. The postmenopausal bleeding is the most common presenting eomplaint. The diagnosis of carcinoma of the fallopian tube is not made preoperatively in most cases. A 57 years woman presented with complainta of postmenopausal bleeding for 1 month. This paper reports a case of primary fallopian tube carcinoma and presents literature review.
Diagnosis ; Fallopian Tubes* ; Female ; Hemorrhage ; Humans ; Incidence

Benign and malignant papillary neoplasms of the breast may be difficult to distinguish in both cytologic and histologic preparations. To define the cytologic features of benign and malignant papillary lesions, we retrospectively reviewed 18 cases of fine needle aspirates from histologically confirmed cases of papilloma or papillary carcinoma of the breast. This study included 3 intraductal papillary carcinomas, 3 invasive papillary carcinomas, and 12 intraductal papillomas. All cases were evaluated for presence or absence of papillary fragments, bloody background, apocrine metaplasia, macrophages, and degree of cellularity, atypia, and single isolated columnar epithelial cells. Papillary fragments were present in all cases. The background of the smear was bloody in all 6 carcinomas, but in only 7 out of 12 papillomas. Markedly increased cellularity was present in 4 carcinomas (67%) and 7 papillomas (58%). Single cells were present in 5 carcinomas (83%) and 8 papillomas (67%). The majority of papillomas and papillary carcinomas had mild to moderate atypia, and severe atypia was noted in one case of intraductal papillary carcinoma and one case of invasive papillary carcinoma. Apocrine metaplasia was absent in all cases of papillary carcinomas, but present in 8 papillomas (67%). Macrophages were noted in 4 carcinomas and were present in all cases of papillomas. The constellation of severe atypia, bloody background, absence of apocrine metaplasia and/or macrophages were features to favor carcinoma. Malignant lesions tended to show higher cellularity and more single isolated cells. The cytologic features mentioned above would be helpful to distinguish benign from malignant papillary lesions of the breast. However, because of overlapping of cytologic features, surgical excision should be warranted in all cases of papillary lesions of the breast to further characterize the tumor
Breast ; Carcinoma, Papillary ; Central Nervous System* ; Cyclosporine* ; Epithelial Cells ; Macrophages ; Metaplasia ; Needles ; Papilloma ; Papilloma, Intraductal ; Retrospective Studies

We know that irrigating fluid used during transurethral resection of prostate (TURP) is rapidly absorbed through open prostatic venous channels in large amount. The TURP syndrome is symptom complex of hypervolemia & hyponatremia (below 130 mEq/1) due to absorption of irrigating fluid. We studied the change of serum sodium, potassium and symptom of hypervolemia during the perioperative period, in 35 patients undergoning TURP. The aim of this clinical study was to examine the possible relation between the irrigating fluid absorption & the development of hyponatremia after TURP. The results were as follow. 1) Though p value was not acceptable, there waa numerical correlation between the weight of resected prostate and the amount of irrigating fluid. 2) TURP syndrome and severe sodium change were not reported in our studiea, 3) We through the cause of above results that operation time & minimal use of irrigating fluid & minimal bleeding due to advanced operative technique, adequate fluid therapy, and intenaive monitoring of vital sign & physiologic change of patients.
Absorption ; Fluid Therapy ; Hemorrhage ; Humans ; Hyponatremia* ; Perioperative Period ; Potassium ; Prostate ; Sodium ; Transurethral Resection of Prostate* ; Vital Signs

Papillary eccrine adenoma is a rare sweat gland tumor with a characteristic histopathological appearance and has a benign clinical course. Five cases were reported in Korea since a report by Song et al. in 1988. We report a case of papillary eccrine adenoma in a 38-year-old male who had a firm, dark brown nodule on the medial surface of the left thigh. Microscopically, the tumor was composed of multiple dilated ducts lined by two or more layers of epithelial cells and the luminal cells showed papillary projections into the lumen in some tubules. Immunoperoxidase staining was positive for CEA, S-100, and EMA. We excised the lesion completely and no evidence of recurrence was observed for 6 months.
Adenoma* ; Adult ; Epithelial Cells ; Humans ; Korea ; Male ; Music ; Phenobarbital ; Recurrence ; Sweat Glands ; Thigh