Ischemic colitis still remains largely underdiagnosed despite the fact that it is one of the most common disorders of the large bowel. The aims of the present study were to evaluate the variable histologic findings of ischemic colitis and to find out helpful histopathological features in diagnosis. Retrospective review of the clinical symptoms, underlying diseases, endoscopic findings of 23 patients, and the histologic features of 37 biopsies was done. We analyzed the significant pathologic features in the histologically diagnosed ischemic colitis group and compared the biopsy time between the histologically diagnosed ischemic colitis group and the non-diagnosed group. Comparison of the endoscopic biopsy time between the group that showed significant histologic features and the group that showed no significant histologic features was also done. The age of the patients ranged from 27 to 87 years. Most patients had abdominal pain, hematemesis, and melena. Endoscopic differential diagnoses included ischemic colitis, ulcerative colitis, infectious colitis, tuberculous colitis, Crohn's disease, and pseudomembranous colitis. Histologic features and diagnoses were also variable. The coagulative necrosis of mucosa and the epithelial desquamation were frequently detected in the group pathologically diagnosed as ischemic colitis. The most pathognomonic finding was coagulative necrosis of the mucosa that was almost always detected within seven days after the onset of clinical symptoms. Recognition of variable patterns of ischemic colitis in a biopsy specimen will direct the clinician to evaluate the vascular system. Early endoscopic biopsy is essential for the precise diagnosis of ischemic colitis.
Abdominal Pain ; Biopsy* ; Colitis ; Colitis, Ischemic* ; Colitis, Ulcerative ; Crohn Disease ; Diagnosis ; Diagnosis, Differential ; Enterocolitis, Pseudomembranous ; Hematemesis ; Humans ; Melena ; Mucous Membrane ; Necrosis ; Retrospective Studies

Forty-three patients with papulo-pustular rosacea with Demodex(D.) folliculorum were treated for 8 weeks on a random basis either with tetracycline 250 mg three times daily or with metronidazole 250 mg three times daily. Both drugs produced an improvement which was greater after 8 weeks than after 4 weeks, but there was no significant difference between them. The number of D. follilculorum after treatment with tetracycline was slightly decreased, but the number of D. folliculorum after treatment with metronidazole was more decreased than the tetracycline group. Metronidazole appears to be a effective drug for the treatment of rosacea with D. folliculorum.
Humans ; Metronidazole* ; Rosacea* ; Tetracycline*

The important prerequisite for treatrnent of onychomycosis is the removal of as rnuch fungus-infected nail material as possible. Nincty-five patients with anychomycosis were treated with using urea preparations under occlusive dressings. The urea preparations were quite successful in maceraing the nail plate from the nail bed, allowing the easy removaI of diseased nails in all cases except one. The urea preparations removed only abnormal nail. Completely normal nail was unaffected. After nail avulsion, 95 patients were treated for 6 months with combination clotrimazole and ketoconazcile(group A), or with clotrimazole only(group B). Of the 38 patients in group A who complcted the treatment, 25(65.8%) were cured 6 months later by clinical and mycological criteria, compared to 20(47.6%) of 42 patieries in group B.
Clotrimazole ; Humans ; Ketoconazole ; Nails, Malformed ; Occlusive Dressings ; Onychomycosis* ; Urea

Epithelioid hemangiomo, is belong to a group of unusual vascular proliferation accompanying prominent eosinophilic infiltration. It is usually classificed as a subset of angiolymphoid hyperplasia with eosinophilia despite of its peculiar endothelial morphology(i.e., vacuolization and hobnail appearance etc.). Histopathologically, the lesion was characterized by exuberant. proliferation of capillaries, epithelioid-appearing erdothelial cell, endothelial cytoplasmic vacuolization, solid sheets of endothelial cells, massive eosinophilic infiltration and lymphoreticular hyperplasia. The lesions are most common in he head-neck region and are characterized by single or multiple smooth-top papules or plnqu s of varying colors. We report two cases of epithelioid hemangioma occurring on the left auricle and scalp. The chiet complaints were pruritus and they have been early bleeding even in trivial trauma. Microscopically, the lesions were consisted of a prolifration of small to medium-sized blood vessels surraunded by inflammatory infiltrates predominantly composed of lymphocytes, histiocytes and eosinophils. The vessels were lined by epithelioid-appearing endothelial cells haveing enlarged round nuclei and abundant easinophilic or clear cytoplasm. Some vessels showed luminal obliteration by proliferating epithelioid endothelial cells. Occasionally, blood vessels were lined by hobnailor scallop-shaped endothelial cells. In immunohistochemical finolings, the epithelioid endothelial cells or proliferated capillaries were immunoreactive to factor VII-related antigen and negative to lysozyme.
Angiolymphoid Hyperplasia with Eosinophilia ; Blood Vessels ; Capillaries ; Cytoplasm ; Endothelial Cells ; Eosinophils ; Hemangioma* ; Hemorrhage ; Histiocytes ; Hyperplasia ; Lymphocytes ; Muramidase ; Phenobarbital ; Pruritus ; Scalp

Lichen planus is rare in Korea and localized lichen planus on the lip without other skin lesions is even rarer. A 77-year-old man has oozing and crusting patches und somewhat ulceration surrounded by whitish reticular elements on violaceous base on both lips with burning sensation and pain. A 63-year-old man has well demarcated violaceous white reticular patches on the lower lip, buccal mucosa, glans penis and coronal sulcus. Clinical and histopathological studies of two cases showed typical features of lichen planus. They were treated with systemic and topical corticosteroids and showed much improvement.
Adrenal Cortex Hormones ; Aged ; Burns ; Humans ; Korea ; Lichen Planus* ; Lichens* ; Lip* ; Male ; Middle Aged ; Mouth Mucosa ; Penis ; Sensation ; Skin ; Ulcer

This study was undertaken to investigate the effect of UVB radiation on epidermal melanoctes of C57BIL mouse, The results are summarized as follows : l) The numerical increase of DOPA positive melanocytes following UVB irradiation was due to both of active mitosis of epidermal melanocytes and the conversion of dormant. malanocytes to DOPA-positive melsnocytes. 2) Long term effects of UVB irradiatinn on the epidermal melanocytes suggest the persistent activation of typrosinase in UVB irradiated melanocytes.
Animals ; Dihydroxyphenylalanine ; Melanocytes* ; Mice* ; Microscopy, Electron ; Mitosis

No abstract available.
Cell Line* ; Dimethyl Sulfoxide* ; Intercellular Signaling Peptides and Proteins* ; Thyroid Gland* ; Thyroid Neoplasms*

No abstract available.
Animals ; Apomorphine* ; Brain* ; Rats*

While there have been not a few reports on the seroepidemiological characteristics of hepatitis B virus (HBV) infection in Korea, most of them, however, have had several limitations; operational definition of HBV infection, validity of detection methods of HBV serologic markers, size of the study population, and confirmation of the vaccination history against HBV, etc. In order to avoid such limitations, authors randomly selected 1,495 healthy adults among the 217,511 insured (target population) of Korean Medical Insurance Corporation, living in seoul, and tested HBV(HBsAg, anti-HBs and anti-HBc) of all the subjects were tested, 392(26.2%) of interview failure cases 742 nonvaccinee were excluded from the actual population. Finally, the serologic markers tested of 742 nonvaccinee (study population) only were analyzed for the seroepidemiologic observation of the natural infection of HBV. The seroepidemiological characteristics of HBV infection in Korea were as follows ; 1 Point prevalence of HBs antigenemia was 11.7(9.1-14.3)% in male, which was slightly higher than that of female, 9.5(3.7-15.3)%. This level was one of the highest among those of Asian-Pacific countries. Decreasing tendency of HBsAg prevalence after the age of 50 was observed, which seems to be due to selective attrition of HBV chronic carriers among the healthy adults and/or to the limited-lasting duration of the HBs antigenemia, in part. 2. Point prevalence of anti-HBc(78.8% in male, 50.9% in female) was higher than that of anti-HBs(65.2% in male, 46.6% in female), respectively. And both of them were higher in male than in female. Increasing tendency of the prevalence of both antibodies was observed by age, which seems to be largely due to recurrent infection in adults and to some cumulative effect, in part, of their relatively longer-lasting duration. 3. The level of HBV infection defined by positive for at least one of the 3 serologic markers of HBV by RIA method was 84.7(81.8-87.6)% in male and 61.2(51.9-70.5)% in female, which was also one of the highest among those of Asian-Pacific countries. The proportion of susceptible population to HBV infection among healthy adults was 15.3% in male and 38.8% in female. 4. The relative frequency of current or past infection and chronic carrier among HBV infected person was estimated. The currently or past infected was estimated 75.7% in male and 71.8% in female, and chronic carrier state, 13.8% in male and 14.1% in female. The analysis of the geometric mean of the antibody titer in anti-HBs positive sera indicated also to be compatible with the above findings, suggesting that active, even though inapparent, infection of HBV occur so frequently among healthy adults in Korea.
Adult* ; Antibodies ; Carrier State ; Female ; Hepatitis B Surface Antigens ; Hepatitis B virus* ; Hepatitis B* ; Hepatitis* ; Humans ; Insurance ; Korea ; Male ; Prevalence ; Radioimmunoassay ; Seoul* ; Vaccination

Nasopharyngeal angiofibroma is a relatively rare, but is a well known tumor that occurs almost in male, most frequently during the adolescent stage. Its character is histologically benign but clinically malignant because of locally invasive character to the adjascent structures, massive bleeding tendency during surgical procedure and high recurrence rate after treatment. Recently many advancements diagnostic method and surgical technique has reached satisfactory result in treating this difficult tumor. The authors present a case of nasopharyngeal angiofibroma in 16 years old male patient, who was received surgical removal of the tumor through the transpalatal approach after full diagnostic evaluation and preoperative hormonal therapy.
Adolescent ; Angiofibroma* ; Hemorrhage ; Humans ; Male ; Methods ; Recurrence