Hemangiopericytoma was first described by Stout & Murray in 1942 and was an uncommon soft tissue tumor thought to be derived from vascular pericytes. Approximately 10-15% of the cases occur in children have a propensity to develop in the region of head, neck and lower extremities. We experienced a case of congenital hemangiopericytoma of small bowel in a male neonate who showed vomiting and abdorninal distension. We reported a case of congenital hemangiopericytoma of small bowel with brief review of related literature.
Child ; Head ; Hemangiopericytoma* ; Humans ; Infant, Newborn ; Intestinal Obstruction* ; Intestine, Small ; Lower Extremity ; Male ; Neck ; Pericytes ; Vomiting

We report a case of simultaneous contralateral renal transitional cell carcinoma and renal cell carcinoma. A 63-yr-old male presented with hematuria. He was diagnosed with left renal pelvis tumor and contralateral renal cell carcinoma. Subsequently, the patient received left nephrectomy and paraaortic lymphadenectomy (transitional cell carcinoma, pT3N2M0). Post-operatively, chemotherapy of renal pelvis tumor and angioinfarction of contralateral renal cell carcinoma are being considered. We believe that management planning should be individualized in such cases.
Carcinoma, Renal Cell/pathology* ; Carcinoma, Transitional Cell/pathology* ; Case Report ; Human ; Kidney Neoplasms/pathology* ; Male ; Middle Age ; Neoplasms, Multiple Primary/pathology*

BACKGROUND: Esmolol is a short acting sympathetic beta receptor antagonist, and it was successfully applied to induced hypotension. Esmolol lowers blood pressure by decreasing cardiac output, and does not cause vasodilation. This property of esmolol may help to decrease bleeding during induced hypotension. In this study, we tried to elucidate the effect of esmolol on induced hypotension for total hip arthroplasty. METHOD: Twenty patients receiving total hip arthroplasty were randomly divided to two groups. Esmolol group (10 patients) received esmolol as a hypotensive agent, and sodium nitroprusside (SNP) group (10 patients) received SNP as a hypotensive agent. We measured arterial blood gas analysis, vital sign, amounts of bleeding, amounts of transfusion and administered fluid, and various laboratory findings. RESULTS: Induced hypotension was successfully performed in either esmolol and SNP group. Heart rate increased by SNP, and decreased by esmolol. There were no statistically significant differences between the two groups in amounts of bleeding, amounts of transfusion or administered fluid, and laboratory findings. Arterial oxygen tension was relatively constant in esmolol group, but decreased in SNP group. CONCLUSION: Esmolol can be used as a single hypotensive agent during induced hypotension without significant side effects during total hip arthroplasty.
Arthroplasty, Replacement, Hip* ; Blood Gas Analysis ; Blood Pressure ; Cardiac Output ; Heart Rate ; Hemorrhage ; Humans ; Hypotension* ; Nitroprusside* ; Oxygen ; Sodium* ; Vasodilation ; Vital Signs

Basaloid follicular hamartoma (BFH) is a benign adnexal tumor with a wide spectrum of clinical appearance and is characterized histologically by the presence of branching cords and thin strands of undifferentiated anasomosing, basaloid proliferations that are embedded in a fibrous stroma. It has been often misdiagnosed and treated as basal cell carcinoma. We report a 57-year-old woman with BFH on the face which is similar to basal cell carcinorna clinically that turned out to be a solitary BFH histologically. There has been no recurrence during one year of follow up after excisional biopsy.
Biopsy ; Carcinoma, Basal Cell ; Female ; Follow-Up Studies ; Hamartoma* ; Humans ; Middle Aged ; Recurrence

We reported two cases of elephantiasis neurofibromatosa in a family. The first case was the son of the second case. Both patients showed huge masses and bone changs. They were treated by surgical excision due to functional and cosmetic problems. The histopathologic findings of the two cases were consistent with neurofibroma.
Elephantiasis* ; Humans ; Neurofibroma ; Neurofibromatoses*

BACKGROUND: Herpes zoster is characterized by vesicular skin lesions over the unilateral sensory dermatomes being caused by the reactivation of varicella-zoster virus and its incidence seems to be increasing recently. OBJECTIVE: The purpose of this study was to elucidate the epidemiology and the clinical characteristics of herpes zoster. METHODS: The authors observed 877 cases of herpes zoster clinically for annual incidence, age, sex, monthly distribution, predilection site, associated disease, and complications at the Department of Dermatology in Chung-Ang University Hospital during a 10 years period(1982.9-1992.8). RESULTS: 1) The annual incidence averaged over 10 years was 2.26%(877 cases of total 38.717 outpatients) being on the increase recently. 2) The age distribution was in the range of 2-86 years old being most prevalent in the 6th decade and there was equal sex ratio(444:433). 3) There was no statistically significant monthly or seasonal variation in the incidence of herpes zoster. 4) The most common anatomical distribution was thoracic dermatome(51.7%), followed by trigeminal(17.1%), cervical(16.1%), lumbar (10.6%), sacral(1.4%)and multiple deramatomic involvement(3.1%). Left or right side was affected in about the same ratio(439:437), and bilateral involvement was in 1 case. 5) Associated disease of herpes zoster were observed in 210 patients(23.9%) ; hypertension(7.0%), diabetes mellitus(4.1%), tuberculosis(1.8%), postoperative status(0.7%), malignancy(0.7%), gastric ulcer(0.7%), and so on, 6) The most common complication of herpes zoster was postherpetic neuralgia(7.4%), followed by eye complication(2.1%), bacterial infection(1.4%), scar formation(0.7%), neurogenic bladder(0.2%), Ramsay-Hunt syndrome(0.2%), motor paralysis(0.1%), herpes zoster generalisatus(0.1%) 7) The incidence of postherpetic neuralgia increased with age and was highest in trigeminal dermatome. 8) Recurrence of herpes zoster was observed in 4 patients(0.5%). CONCLUSION: According to this study, the annual incidence of herpes zoster showed a tendency to increase recently but there was no significant monthly or seasonal variation. The anatomical distribution was most commom on the thoracic dermatome. The incidenc of postherpetic neuralgia increased with age being most common in trigeminal nerve.
Age Distribution ; Cicatrix ; Dermatology ; Epidemiology ; Herpes Zoster* ; Herpesvirus 3, Human ; Incidence ; Neuralgia, Postherpetic ; Recurrence ; Seasons ; Skin ; Trigeminal Nerve

Primary retroperitoneal mucinous tumor is very rare. In the worldwide literature, only 14 cases have been reported. Herein, we report two cases of retroperitoneal mucinous tumor found at laparotomy. The patients were females, aged 24 and 21 years, respectively. They had bilateral normal ovaries. Histologically, one was mucinous cystadenoma and the other showed borderline histology. The connective tissue wall resembling ovarian stroma was noted in one case. The pathogenesis was discussed.
Female ; Humans

PURPOSE: To evaluate protective mechanism of melatonin against radiation damage and its relationship with apoptosis in mouse jejunum. MATERIALS AND METHODS:' 168 mice were divided into 28 groups according to radiation dose and melatonin treatment. To analysis crypt survival, microcolony survival assay was done according to Withers an (l Elkind's method. To analysis apoptosis, TUNEL assay was done according to Labet-Moleur's method. RESULTS: Radiation protection effect of melatonin was demonstrated by crypt survival assay and its effect was stronger in high radiation dose area. Apoptosis index with 8 Gy irradiation was 18.4% in control group and 16.5% in melatonin treated group. After 18 Gy, apoptosis index was 17.2% in control group and 15.4% in melatonin treated group. Apoptosis index did not show statistically significant difference between melatonin treated group and control group. CONCLUSION: Melatonin shows clear protective effect in mouse jejunum against radiation damage but it.', protective effect seems not to be related with apoptosis protection effect.
Animals ; Apoptosis* ; Cell Survival* ; In Situ Nick-End Labeling ; Jejunum ; Melatonin* ; Mice* ; Radiation Protection

Pigmented extraadrenal paraganglioma is an unusual neoplasm that has rarely been reported in the literature. Based on histochemical staining or electron microscopy, pigment has been classified as lipofuscin, neuromelanin or true melanin. We report a case of pigmented extraadrenal paraganglioma in the posterior mediastinum of a 70-year-old woman. Histologically, the tumor had a characteristic organoid architecture of "zellballen" pattern with rich delicate microvasculature. Tumor cells contained numerous coarse brown-black pigment granules. Ultrastructurally, the tumor showed abundant large electron-dense pigment granules that vary in size and shape and smaller membrane-bound neurosecretory granules. The larger granules were consistent with neuromelanin or lipofuscin. Histochemically, the pigment is most likely neuromelanin, which is a waste product of catecholamine metabolism.
Aged ; Female ; Humans ; Lipofuscin ; Mediastinum ; Melanins ; Metabolism ; Microscopy, Electron ; Microvessels ; Organoids ; Paraganglioma* ; Waste Products