JL1 is a novel human thymocyte differentiation antigen, which is exclusively expressed by double positive (CD4+ CD8+) cortical thymocytes. We previously reported that the JL1 antigen was selectively expressed on the surface of acute lymphoblastic leukemia cells. T-Lymphoblastic lymphoma/acute lymphoblastic leukemia (T-LBL/ALL), the 6th prevalent lymphoma in Korea, is composed of immature neoplastic lymphoid cells and shows a rapid response to appropriate treatment. Early and precise diagnosis of LBL/ALL is crucial. Light microscopic distinction of LBL/ALL from other non-Hodgkin's lymphomas can sometimes be difficult and is aided by immunophenotypic studies. This study is designed to investigate the diagnostic utility of anti-JL1 monoclonal antibody (YG5) for LBL/ALL in formalin fixed, paraffin embedded tissue. We collected 25 cases of LBL/ALL (18 T-cell, 5 B-cell and 2 undetermined lineage) from 1993 through 1998. We confirmed the diagnosis using morphologic and immunophenotypic data. Strong JL1 expression along cell membrane was observed in 16 out of 18 T-LBL/ALL cases (89%). In 28 cases of other types of lymphomas of including 7 cases of non-T LBL/ALL and 14 cases of small round cell tumors, no JL1 expression was identified. These results show that the immunostaining for JL1 using YG5 on paraffin embedded sections can be useful for the specific diagnosis of T-LBL/ALL in routine diagnostic service.
B-Lymphocytes ; Cell Membrane ; Diagnosis ; Diagnostic Services ; Formaldehyde ; Humans ; Immunologic Tests ; Korea ; Lymphocytes ; Lymphoma ; Lymphoma, Non-Hodgkin ; Paraffin* ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; T-Lymphocytes ; Thymocytes

No abstract available.
Arthritis, Rheumatoid* ; Humans ; Scleroderma, Localized*

A 51-year-old female had disseminated, symmetrically distributed, brownish black pigmentation and papillary hypertrophy on the intertriginous and flexural areas for 6 months, and gastric adenocarcinoma was confirmed during the evaluation of internal malignancy, The cutaneous finding of acanthosis nigricans was a significant cutaneous marker of internal malignancy in this case.
Acanthosis Nigricans* ; Adenocarcinoma* ; Female ; Humans ; Hypertrophy ; Middle Aged ; Pigmentation

STUDY DESIGN: We report two cases of symptomatic spinal epidural lipomatosis (SEL) associated with long-term use of steroid medication OBJECTIVES: The purpose of this study was to assess the clinical characteristics, diagnosis and treatment of symptomatic spinal epidural lipomatosis. SUMMARY OF LITERATURE REVIEW: Spinal epidural lipomatosis is a condition in which excess adipose tissue is deposited circumferentially about the spinal cord in the epidural space. It can present neurologic symptoms including back pain, radiculopathy or cauda equina. Magnetic resonance imaging is the most helpful dignostic means and should be used initially if suspected. Treatment is decompressive laminectomy and debulking of fat. MATERIALS AND METHODS: Two cases of lumbar epidural lipomatosis with neurologic symptoms were discussed and evaluated by physical examination, postmyelography CT and MRI. RESULTS: Two cases were treated with decompressive laminectomy and debulking of fat. Increased accumulation of the fatty tissue was seen predominently in posterior and posterolateral epidural space of the spinal canal, displacing and compressing the lumbar spinal cord anteriorly. Both gross and histologic evaluation revealed overgrowth of unencapsulated normal appearing fat consistent with spinal epidural lipomatosis. One case was demonstrated gradual improvement in symtoms after operation but the other was died due to medical problems. CONCLUSION: The authors reviewed the literature and reported the results of operative treatment of patients with lumbago, radicular pain and intermitent claudication caused by epidural lipomatosis of lumbar spine and degenerative spinal stenosis.
Adipose Tissue ; Back Pain ; Cauda Equina ; Diagnosis ; Epidural Space ; Humans ; Laminectomy ; Lipomatosis* ; Low Back Pain ; Magnetic Resonance Imaging ; Neurologic Manifestations ; Physical Examination ; Radiculopathy ; Spinal Canal ; Spinal Cord ; Spinal Stenosis ; Spine

No abstract available.
Eating* ; Liver* ; Pneumonia* ; Sharks*

No abstract available.
De Lange Syndrome*

No abstract available.
Arthrography* ; Wrist*

We observed a case of sebaceous epithelioma associated with a nevus sebaceus in a 25-year-old male. The tumor was bean-sized, dome-shaped nodule on the slightly yellowish plaque of nevus sebaceus. Histopathological finding shows undifferentiated cells which are arranged in a palisade fashion at the periphery of a cell mass and a fairly large number of transitional cells and groups of mature sebaeeous cells.
Adult ; Carcinoma* ; Humans ; Male ; Nevus* ; Nevus, Sebaceous of Jadassohn*

Posterior segment injuries due to non-penetrating ocular trauma have protean ocular manifestations. Vision may be unaffected or completely lost according to the injured area. Although most cases require no specific treatment, early accurate diagnosis and appropriate prophylactic treatment will prevent some patients from late visual loss. We analyzed retrospectively 36 eyes of 36 patients with non-penetrating posterior segment trauma who had visited our clinic from August, 1994 to February, 1997. Thirty two of the patients(88.8%) were male and the peak age group was in the third decade. Thirteen of the patients(21%) had Berlin`s edema, which was one of the most common findings seen in the posterior segment. The most common anterior segment finding associated with non-penetrating ocular trauma was hyphema(20%). The most common cause of non-penetrating trauma was violence(first, foot)(38.8%). Final visual acuity was better in eyes without the lesion involving the macula.
Diagnosis ; Edema ; Humans ; Male ; Retrospective Studies ; Visual Acuity

One patient is a 6-year old female, who has had intensely pruritic linear papuloplaque.", on the left side of the perineal and perianal areas for three years. The other patient, is a. 23-year old male, who has had iritensely pruritic linear papuloplagues on the left upper extremity. This condition started at 1 month of life. In both cases, microscopie examination of the lesions showed psoriasiform and eczematoid appearance. In the latter case, spongioform pustule and Munro's microabscess were also found. We believe that these cases probably represent instances of the entity that. Altman and Mehregan have called inflammatory linear verrueous epidermal nevus, and unusual clinical feature in our patients was the involvement of the left groin in case 1 and of the left upper extremity in case II, which are somewhat rare sites of involvement.
Child ; Female ; Groin ; Humans ; Male ; Nevus ; Nevus, Sebaceous of Jadassohn* ; Upper Extremity ; Young Adult