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Biomedical subjects

S I Chun

Publications and source records attributed to S I Chun.

At least 37 records · Page 2Linked to original sources
PubMed1992

Intestinal neurofibromatosis in von Recklinghausen's disease: presenting as chronic anemia due to recurrent intestinal hemorrhage.

Neurofibromatosis (von Recklinghausen's disease) is a neuroectodermal disorder characterized by pigmentary changes of the skin (café-au-lait spots), cutaneous and visceral tumors (neurofibromas) and systemic abnormalities. The involvement of gastrointestinal tract in neurofibromatosis is not common. The most common symptoms, refer able to lesions in the gut, are hematemesis, melena and abdominal pain. We experienced a case of intestinal neurofibroma in von Recklinghausen's disease. The patient was a 39 year-old female who had suffered from chronic iron deficiency anemia and recurrent gastrointestinal hemorrhage due to two neurofibromas of jejunum for 3 years, which was diagnosed by superior mesenteric and ileal arteriogram and 99mTc pertechnetate-labelled RBC scan, and treated by segmental resection of jejunum with end to end anastomosis.

Adult↗
PubMed1991

Membranous lipodystrophy: primary idiopathic type.

A 20-year-old woman had a pea-sized, tender subcutaneous nodule on the leg. Histopathologically, the panniculus showed multiple microcysts lined by membranes and light brown granules in the histiocytes. Histochemical studies of the membranes of the microcysts and the granules in the histiocytes indicated that they were composed of ceroid. Electron microscopy revealed that the membrane of the microcyst was composed of electron-dense areas of a regular 18.6 nm lamellar array and reticulated vacuolated areas suggestive of degenerating fat cells of unknown origin. Membranous lipodystrophy has been associated with many local and systemic diseases, but it may be idiopathic, as in our patient.

Adipose Tissue↗
PubMed1991

Silica granuloma: scanning electron microscopy and energy dispersive X-ray microanalysis.

A 46-year-old woman had 1-month-old erythematous papules on the left elbow and both knees where acupuncture with gold needles had been performed twenty years earlier. She also had a 2-month-old pruritic scar lesion on the nape. Histopathologic findings showed sarcoidal granulomas. The presence of silica components in the granulomas was confirmed by scanning electron microscopy (SEM) of the lesion on the nape and energy dispersive X-ray microanalysis (EDXA) of the lesions on the nape and the left elbow. We suggest that acupuncture with gold needles may be one cause of silica granuloma.

Acupuncture Therapy↗
PubMed1991

Isometric and isokinetic torque curves at the knee joint.

Isometric and isokinetic torques of bilateral quadriceps and hamstrings were measured with Isokinetic Rehabilitation and Testing System (Model No. Cybex 340) on 40 normal untrained subjects, 20 males and 20 females, ranging between the ages of 23 and 35 years. The mean peak isometric and isokinetic torque values of both muscle groups showed no significant differences between dominant (right) and nondominant (left) limbs in both sexes; however there were significant differences between the male and the female. As the angular velocity increased, the peak torque significantly decreased, and the point of peak torque output occurred significantly later in the range of motion for quadriceps and hamstrings (p less than 0.01). There were no significant changes in the hamstrings to quadriceps (H/Q) ratios as the angular velocity increased. However, there were significant differences of mean H/Q ratio between male and female (p less than 0.01). Height had significant positive correlation with peak isometric and isokinetic torques for both quadriceps and hamstrings (p less than 0.01). Weight was found to correlate significantly with peak isometric and isokinetic torques (p less than 0.01). The mean isometric torques were significantly higher than the mean isokinetic torques for any joint angles in both sexes (p less than .01).

Adult↗
PubMed1991

Congenital absence of pectoralis major: a case report and isokinetic analysis of shoulder motion.

Although pectoralis major plays an important role as a prime or assistant mover for the varied range of shoulder movement, there was no significant functional loss in ordinary activities in case of congenital absence of this muscle, because of compensation of surrounding muscles. This report describes a 22-year-old soldier with unilateral congenital absence of pectoralis major, who had difficulties in specific upper extremity movement, such as throwing or climbing. There was no visible or radiological evidence of associated anomalies of ipsilateral upper extremity. Electrodiagnostic study showed normal findings except delayed latency of medial pectoral nerve supplying rudimentary pectoralis minor of the involved side. On isokinetic study of movement for both shoulders, peak torque and average power for horizontal adduction were markedly-diminished on the involved side.

Adult↗
PubMed1991

A case of HTLV-I associated myelopathy(HAM) in Korea.

We report the first Korean case of HTLV-I associated myelopathy (HAM), which was confirmed by Western blot assay of serum and cerebrospinal fluid. Interestingly, the proband's wife was a Japanese Korean who had lived in the endemic area of HAM, Kyushu. Japan, Investigations revealed significantly elevated anti HTLV-I antibody titers in the serum, but not in the CSF, suggesting that she was a carrier of HTLV-I. Considering that the patient had not had a previous blood transfusion, the most common route of HTLV-I, it is likely that the patient was infected by his wife through sexual intercourse. Although previous reports suggest that the transmission of HTLV-I is essentially from man to man or man to woman, our case suggests that woman to man transmission also occurs.

Adult↗
PubMed1991

Coexisting mycosis fungoides and Hodgkin's disease as a composite lymphoma: a case report.

Within the past few years, an increasing number of reports of Hodgkin's disease following the diagnosis of, and frequently coexisting with, mycosis fungoides have appeared. Previously, Hodgkin's disease found in the lymph nodes of the patient diagnosed as mycosis fungoides was considered as a transformed form of the mycosis fungoides. But, now it has been proven that Hodgkin's disease and mycosis fungoides are histologically and immunohistochemically distinct disease entities. We report a well-documented case of a man who developed Hodgkin's disease and mycosis fungoides simultaneously as a composite lymphoma. Our case emphasizes the importance of considering the diagnosis of another lymphoma in patients with mycosis fungoides who have lymphadenopathy. The cutaneous mycosis fungoides and the Hodgkin's disease should be treated as an independent disease.

Adult↗
PubMed1990

An epidermoid cyst with a seborrheic verruca-like cyst wall.

The epidermoid cyst with a seborrheic verruca-like cyst wall is a newly described variant of the epidermoid cyst. The cyst wall of this variant shows changes simulating seborrheic keratosis and verruca. Our case of a subcutaneous mass was shown histopathologically to have this variant.

Adult↗
PubMed1990

Histopathologic study of cutaneous lesions in Behçet's syndrome.

Light microscopic studies of 55 patients with complete and incomplete types of Behçet's syndrome were reviewed. We reported here 39 skin biopsies from 30 patients with cutaneous lesions of oral, and genital ulcers, folliculitis, erythema multiforme, and thrombophlebitis. Leukocytoclastic vasculitis was seen in 5 of 12 (42%) cases of oral ulcers and 2 of 7 (29%) of genital ones. Lymphocytic vasculitis was demonstrated in 3 of 12 (25%) cases of oral ulcers and 4 of 7 (57%) of genital ulcers. However, the vasculitis was observed only locally in the areas with moderate or severe inflammation. From the biopsy specimens of our cases with fully developed mucocutaneous lesions of Behçet's syndrome, it appears that the forms of vasculitis that are often emphasized in the literature are a phenomenon secondary to the intense inflammation seen in such cutaneous lesions.

Behcet Syndrome↗
PubMed1990

Pachyonychia congenita: a clinical study of 12 cases and review of the literature.

Twelve cases of pachyonychia congenita were reviewed. The mode of inheritance was autosomal dominant. The clinical features of these patients included thickened nails, hyperkeratosis of the palms and soles, thinning of hair or alopecia, painful bullae or ulcerations of the palms and soles, leukokeratosis oris, verrucous lesions of the extremities, hyperhidrosis, premature eruption of teeth, paronychial infections, epidermal cysts with milia, and corneal dyskeratosis at times associated with cataracts. Biopsy from the plantar lesions usually revealed marked hyperkeratosis, acanthosis, moderate hypergranulosis, and minimal dermal inflammatory infiltration. Treatment with keratolytic agents and lubricants is indicated to areas of palmar and plantar hyperkeratosis but usually produces only transient benefit. Squamous cell carcinoma developed in one of the patients over the site of chronic plantar ulcerations. Areas of chronic bullous formation or ulceration should be observed for possible skin malignancy.

Adolescent↗
PubMed1989

Erythema nodosum-like lesions in Behçet's syndrome: a histopathologic study of 30 cases.

Thirty patients who fulfilled the criteria for complete and incomplete types of Behçet's syndrome were studied to determine the histopathologic changes of erythema nodosum-like lesions. Lymphocytic vasculitis was observed in 12 (40%) of the cases, but it was only focal in areas of severe lymphocytic inflammation and only mild in degree. No diffuse vasculitis was seen. It is our opinion that the observed lymphocytic vasculitis is only secondary to moderate or severe lymphocytic inflammation. Twelve cases (40%) revealed septal panniculitis, 10 cases (33%) demonstrated lobular panniculitis with moderate to marked inflammation and fat cell necrosis, and 8 cases (27%) showed mild and nonspecific inflammation in the panniculus. Therefore, there is a spectrum of histopathologic changes of erythema nodosum-like lesions in Behçet's syndrome, similar to that of erythema nodosum secondary to other systemic disorders.

Adolescent↗
PubMed1988

Porokeratosis plantaris discreta. A case showing transepidermal elimination.

A 16-year old girl developed multiple, well-demarcated, extremely painful, hyperkeratotic nodules on her left sole. Histologic examination revealed a cornoid lamella and transepidermal elimination of blood vessels and collagen fibers which may be caused by the acceleration of keratinization. The pain and tenderness may have been partially related to epidermal disruption.

Adolescent↗
PubMed1988

Squamous cell carcinoma arising in Hailey-Hailey disease.

A case of squamous cell carcinoma (SCC) arising in a lesion of Hailey-Hailey disease at the penoscrotal junction is reported. The patient was treated with arsphenamine (Salvarsan 606) early in the disease. It is possible that this carcinogen, as well as friction and the local irritation of long-standing Hailey-Hailey skin lesions, may be the predisposing factors for the development of SCC in this case.

Aged↗
PubMed1987

Generalized anhidrosis associated with Fabry's disease.

A 28-year-old Korean man suffered from generalized acquired anhidrosis and heat intolerance that were confirmed by a sweat test. Other clinical features consistent with Fabry's disease were fever and severe pain of the lower extremities and leg edema. Although the patients lacked cutaneous angiokeratomas, ultrastructural studies of the normal skin demonstrated diagnostic intracytoplasmic inclusions in the endothelial cells and pericytes of dermal vessels, fibroblasts, perineural cells, and secretory cells of eccrine glands. alpha-Galactosidase assay of the patient's leukocytes showed markedly decreased activity, which confirms the diagnosis.

Adult↗
PubMed1984

Therapeutic effect of dinitrochlorobenzene (DNCB) on verruca plana and verruca vulgaris.

Fifty-nine patients with verrucae (45 with verrucae plana and 14 with verrucae vulgaris) were treated with dinitrochlorobenzene (DNCB) as a topical application on the normal uninvolved skin of the shoulder for sensitization and challenge. The patients were sensitized with 0.5 ml of 0.4% DNCB solution and then challenged with 0.1% DNCB ointment twice a week. Six cases of verrucae plana and 1 case of verrucae vulgaris were completely cured by sensitization only and 32 cases of verrucae plana and 7 cases of verrucae vulgaris were completely resolved by repeated challenges. The therapeutic effect was better in verrucae plana (84.4%) than in verrucae vulgaris (57.1%), and the verrucae were completely resolved within 10 weeks in more than 90% of the patients cured by challenge. The side effects of DNCB were mild allergic contact dermatitis and slight transitory hyperpigmentation at the site of application.

Administration, Topical↗
PubMed1982

Lipodystrophia centrifugalis abdominalis juvenilis.

8 Korean children exhibited well-defined depressed lesions of the skin accompanied by slight redness of the surrounding area. First these lesions appeared in the inguinal area and then spread peripherally to the navel region and the ipsilateral vulval area. In these 8 cases, 7 occurred in girls and 1 in a boy. The age of onset ranged from 2 to 9 years. Biopsy specimens taken from the well-depressed area showed a decrease in or absence of, subcutaneous fat and a mild inflammatory infiltrate of lymphocytes and histiocytes in the lower dermis and subcutis. These 8 cases are the first, to our knowledge, to be reported outside Japan and considering the age of onset of the dermatosis it is not confined to infants. Therefore, we would like to describe this entity under the title of lipodystrophia centrifugalis abdominalis juvenilis instead of lipodystrophia centrifugalis abdominalis infantilis.

Abdomen↗
PubMed1980

Treatment of verruca plana with 5% 5-fluorouracil ointment.

11 patients with verruca plana were treated with 5% 5-Fluorouracil ointment as a twice daily topical application with open dressing. The patients were chosen among those who failed to be cured with avrious topical agents such as salicylic acid, vitamin A acid and dinitrochlorobenzene (DNCB), or even with carbon dioxide cryotherapy, oral administration of methotrexate and intramuscular injection of sodium cacodylate. In 9 patients, all the treated warts completely disappeared within 3--5 weeks. 2 of these patients had recurrence after 3 weeks and 2 months, respectively. In 2 patients, some lesions disppeared while others failed to be healed. The major clinical adverse reactions were hyperpigmentation (8 cases), erythema (5 cases) and erosion (5 cases).

Administration, Topical↗