A Case of Extensive Nevus Comedonicus

A 17-year-old woman had an extensive nevus comedonicus affecting the left sides of the breast, trunk, axilla, and upper extremity. Her condition was complicated by episodes of re-current cyst formation, secondary infection, and atrophic scars. We performed various therapeutic approaches include topical keratolytic agents, manual extraction of comedones, excision of smaller lesions, and systemic antibiotics but the response was unsatisfactory. We tried systemic isotretinoin and minocycline and the pustulation of the lesions was reduced. Herein we report a rare case of linearly arranged extensive nevus comedonicus.

A Cases of Cutaneous Metastasis Probably Originating From Stomach Carcinoma / 대한피부과학회지

Cutaneous metastases from internal carcinornas are relatively rare. The frequency of metastases to the skin varies from 0.5-4.4%. We report a case of cutaneous metastasis suspected to originat from stomach cancer. A 44-year-old female, who had an episode of total gastrectony under diagnosis of stornach cancer three years ago, had multipe painless erythernatous nodules on the case and neck for one year. Histologic findings shows atypical anaplastic cell infiltration at the derr is and subcutaneous tissues. Cells with hyperchrornatic and erally displaced nuclei were recogniz d PAS staining shows positive reactions within the cells of glarid like structure. She died twelve month after the appearance of the cutaneous lesions.

A Case of Histoid Leproma with Mycobacterium leprae Detected in the Peripheral Blood by polymerase Chain Reaction / 대한피부과학회지

Histoid leproma usually occur in pat.ients with lepromatous leproy who have had relapsed after being undcr treatment(usually sulfones) for a long time and who have shown variable improvement. A 56 year old female patient who had been suffering from lepromatous leprosy and had been treated which clapsone relatively regularly for approximately 28 years had a history of several shiny rice grain t.o peanut sized nodules on the face and right flank. Histopathologic examination of a specimen taken from a nodular lesian revealed a well circirmscrihed nodule composed mainly of spindle-shaped cells and epithe:ioi 1 cells on the upper and mid-levmis, and granuloma composed of epithelioid cells, multinucleated wait cells and foamy histiocytes on the lower dermis. In AFB stain, numerous acid-fast bacilli were scatt red dermis and epidermis, especially stratum corneum. This study opplied a polymease chain reaction(PCR) on sections of biopsy tissues and peripheral blood of pat.ient. Positive amplification of a 530 bp fragment was deteated not only in the lesion tissues but also in the per ipher al blood.

Detection of Mycobacterium leprae in Tissue and Blood by Polymerase Chain Reaction

BACKGROUND: Methods to detect and quanitify Mycobacterium leprae(M. leprae)are needed for studies involving the epidemiology, pathogenesis, and chemotherapy of leprosy. Serological assays and skin tests lack the sensitivity and specificity to serve as diagnostic tool for M. leprae infection. The polymerase chain reaction(PCR) based on the selective amplification of an 530-bp frangment of the gene encoding the proline-rich antigen of M. leprae was performed with sections of fixed or frozen biopsy samples from leprosy patients. OBJECTIVE: This study was done to investigate the applicability of PCR for the detection of low numbers of M. leprae in tissues and peripheral blood. METHODS: The PCR was used to amplify a 530-base-pair M. leprae DNA with the thermoxtable Taq DNA polymerase. RESULTS: The In frozen skin tissues and peripheral blood of leprosy patients. relatively high detection rates of PCR products was achieved by using direct gel analysis as well as Southern blot hybridization. CONCLUSION: These results suggest that PCR amplification for the detection of M. leprae may be useful for the epidemiologic study of large papulations as well as coinical astudies on the individual patients.

A case of leukemia cutis / 대한피부과학회지

Leukemia cutis is defined as infiltration of the skin by malignant leukocytes that have originated from the bone marrow. The cutaneous eruption of leukcmia may be divided into the specific and non-specific lesion (leukemid). These may occur separately or in combination. True leukemia infiltrations of the skin consist of nodular, diffuse, or plaque-like infiltrations with swelling, macules, papules, ecchymoses, palpable purpura, erythroderma, and ulceration. A 55-year-old man presented with multiple as mptomatic dark-brown nodules on the whole body with recurrent gingival bleeding. The patient developed seoticemia and died 6 months after the onset of the disease.

Two cases of aquamous cell carcinoma of the lower lip treated with liquid nitrogen / 대한피부과학회지

Squamous cell carcinoma of the lower lip can be developec by a number of underlying etiologic factors, the most outstanding of which is solar irracdiation, and is considerably more aggresive and has a much higher incidence of metastatic spread. Its early detection and effective treatment afford a high cure rate. Cryosurgery is a simple, efficient and effective method of treatment of skin cancer and is now a widely accepted modality for the treatment of these lesions. Two patients(67-year-old male and 57-year-old female) were presented with solitary or two masses on the lower lip without regional lymphadenopathy. These two cases showed clinical and histopathologic findings of squamous cell carcinoma. They were successfully treated by cryotherapy with liquid nitrogen without any significant side effects.