2.roded Polypoid Hyperplasia of the Rectosigmoid Colon: Report of 2 cases with special reference to its relation to mucosal prolapse syndrome.
Nam Hoon CHO ; Hee Jeong AHN ; Chan Il PARK
Korean Journal of Pathology 1994;28(3):297-301
Polypoid prolapse of mucosal folds can occur at various sites and in various conditions predominantly associated with strain during defecation. There are two well known types of mucosal prolapse syndrome(MPS), the inflammatory cloacogenic polyp(ICP) and the mucosal redundant polyp associated with diverticular disease(N4RPD). ICP is a mucosal prolapse of the anorectal junction and MRPD is a proximal analogue involving the sigmoid colon. We experienced two cases of eroded polypoid hyperplasia(EPH) of the rectosigmoid colon which manifested as a huge gyriform mass simulating the gross features of gastrointestinal lymphomas or other malignant tumors. The EPH consisted of confluent polypoid mucosal folds with rolled-up submucosa to form stalk, The polypoid lesion represented hyperplastic epithelium, erosion of the mucosal surface and congestive vascular ectasia of lamina propria and submucosa. To explain the whole morphologic features, the initial phenomenon should be the mucosal prolapse. Vascular stretching with ischemic erosion of the mucosal surface and compensatory epithelial hyperplasia ensue as the result. The ominous endoscopic and gross features of EPH should be kept in mind to avoid erroneous radical surgery.
3.A Case of Cytophagic Histiocytic Panniculitis.
Hyung Keun NAM ; Byong Rai CHO ; Don Hee AHN ; Keun Chan SOHN ; Jin Hee SOHN
Journal of the Korean Pediatric Society 1989;32(7):995-1000
No abstract available.
Panniculitis*
4.Malignant Granular Cell Tumor of the Shoulder: A case report.
Jae Hun CHUNG ; Jae Hyuk LEE ; Jong Hee NAM ; Chan CHOI ; Min Cheol LEE
Korean Journal of Pathology 2000;34(6):475-479
A malignant granular cell tumor (MGCT) occurred in the left shoulder of a 62-year-old man. The patient underwent wide marginal excision followed by chemotherapy and radiotherapy. A metastatic tumor was identified in the axillary lymph node 22 months after the excision of the shoulder mass. The primary tumor was a poorly circumscribed mass measuring 5 5 4 cm. On cut section, it was a solid mass with yellowish tan color. Histologically, both primary and metastatic tumor consisted of polygonal cells with abundant granular cytoplasm and a vesicular nucleus with a prominent nucleolus. Two to three mitotic figures per ten high power fields at 200 were counted. Tumor cells were weakly stained with periodic acid-Schiff (PAS) preparation both before and after diastase digestion, and were positive for S-100 protein, neuron-specific enolase (NSE), and vimentin. By electron microscopy, the cytoplasm was filled with numerous autophagolysosomes containing myelin figures, mitochondria, and fragmented rough endoplasmic reticula. Basal laminae and angulated bodies were also noted. These findings suggest schwannian differentiation of this tumor.
Amylases
;
Basement Membrane
;
Cytoplasm
;
Digestion
;
Drug Therapy
;
Granular Cell Tumor*
;
Humans
;
Immunohistochemistry
;
Lymph Nodes
;
Microscopy, Electron
;
Middle Aged
;
Mitochondria
;
Myelin Sheath
;
Phosphopyruvate Hydratase
;
Radiotherapy
;
S100 Proteins
;
Shoulder*
;
Triacetoneamine-N-Oxyl
;
Vimentin
5.Study on the Clinical Aspect of Failure to Thrive.
Hyung Keun NAM ; Myung Ik LEE ; Don Hee AHN ; Keun Chan SOHN
Journal of the Korean Pediatric Society 1989;32(3):303-310
No abstract available.
Failure to Thrive*
6.Studies on the relationship between cell proliforation and human cytomegalovirus multiplication: effect of papaverine and methotrexate.
Youn Jeong NAM ; Jae In LEE ; Yong Hoon JIE ; Chan Hee LEE
Journal of the Korean Society of Virology 1991;21(2):193-200
No abstract available.
Cytomegalovirus*
;
Humans*
;
Methotrexate*
;
Papaverine*
7.Brown Tumors Due to Parathyroid Carcinoma ; 99mTc-MIBI Scan Findings: Case Report.
Su Zy KIM ; Chan Hee PARK ; Soek Nam YOON ; Byung Soek KIM ; Yoon Soek CHUNG
Korean Journal of Nuclear Medicine 1997;31(3):395-398
No abstract available.
Parathyroid Neoplasms*
8.Impact of Chronic Simulated Snoring on Carotid Atherosclerosis in Rabbits.
Hyunwoo NAM ; Hee Jin YANG ; Young Ah KIM ; Hee Chan KIM
Journal of Clinical Neurology 2013;9(4):269-273
BACKGROUND AND PURPOSE: Chronic simulated snoring was induced in rabbits to determine the impact of snoring on the development of atherosclerosis. METHODS: The pressure wave of induced snoring at the carotid bifurcation of rabbits was acquired by gently pressing the airway. This wave was then simulated using custom-made mechanical devices. Twelve rabbits were used in this study, seven of which were assigned to the experimental group and the remaining five formed the control group. All of the rabbits were raised on a 1% high-cholesterol diet. Either working or sham devices were positioned at the ventral center of the neck in each rabbit. At the end of a 2-month observation period, all of the rabbits were sacrificed by perfusion fixation, the carotid arteries harvested, and the carotid atherosclerosis histology reviewed. RESULTS: All of the rabbits survived to the end of the experimental period. Blood sampling revealed the presence of hypercholesterolemia in both groups, with no significant difference between them. The presence and degree of atherosclerosis did not differ significantly between the groups. CONCLUSIONS: The findings of this study show the feasibility of making a chronic simulated snoring rabbit model. However, the causative role of snoring in carotid atherosclerosis was not detected in this animal study.
Animals
;
Atherosclerosis
;
Carotid Arteries
;
Carotid Artery Diseases*
;
Diet
;
Hypercholesterolemia
;
Neck
;
Perfusion
;
Rabbits*
;
Snoring*
9.Clinical Analysis of 149 Cases of Twin Pregnancies.
Yeoung Chan PARK ; Sun Hee KO ; Tae In LEE ; Jae Nam MA ; Kang Woo JUNG ; Jong Cheon WEON ; Yong Pil KIM
Korean Journal of Obstetrics and Gynecology 2000;43(9):1539-1543
No abstract available.
Humans
;
Pregnancy, Twin*