K. Venkata Ratnam

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Purpura simplex manifests clinically as macular purpuric and petechial pigmented, golden, annular, or lichenoid lesions. These subtypes have been termed Schamberg's purpura, lichen aureus, Majocchi's purpura, and Gougerot-Blum purpura. Histologically, there is inflammation and hemorrhage without fibrinoid necrosis of vessels. One hundred seventy-four cases(More)
BACKGROUND Pemphigus vulgaris is characterized by relapses and remission, and there are currently no sensitive markers to predict remission. OBJECTIVE Our purpose was to determine if direct immunofluorescence (DIF) performed during clinical remission of pemphigus is useful in management of the disease. METHODS Twenty-eight patients with pemphigus that(More)
BACKGROUND Little is known of the course and prognosis of hypersensitivity vasculitis (HV). METHODS Sixty-one cases of idiopathic HV were biopsied and followed-up for 5 years. RESULTS There were two predominant patterns of presentation: palpable purpura (PP) and vasculitic ulcers (VU). The former was self-limiting, whereas the prognosis of the latter(More)
Leukemia cutis is an uncommon manifestation of leukemia that is strongly associated with the presence of extramedullary disease at other sites. Patients usually present with leukemia cutis concomitantly with systemic leukemia or after leukemia has been diagnosed. Acute monocytic, myelomonocytic, and the T-cell leukemias show the highest incidence of(More)
Twenty-two newly diagnosed patients with pemphigus were randomly divided into two groups of 11 each. One group was placed on a high-dose prednisolone (120 mg/day) therapy and the other group on a low-dose (60 mg/day) therapy. The patients were followed for 5 years. Although a rapid initial control of the pemphigus appeared to be achieved with the high-dose(More)
During a 10-year period (1976-1985), eight Chinese patients from a population of 2.5 million fulfilled the criteria for dermatitis herpetiformis and linear IgA bullous dermatosis (LABD). These rare diseases among Asians presented during the third decade of life with homogenous linear IgA deposits along the dermoepidermal junction in four of the eight cases.(More)
A grave prognosis is usually associated with leukemic skin infiltrates (leukemia cutis). However, some leukemic skin infiltrates are clinically similar to reactive non-leukemic infiltrates in patients with leukemia; thus it is of great importance to distinguish them. Fifty-four cases which were thought clinically to be leukemia cutis underwent(More)
We studied 100 cases of chronic cutaneous discoid lupus erythematosus (DLE) to evaluate the diagnostic sensitivity of immunoreactant deposition and its possible role in basement membrane thickening. Histopathology was diagnostic in 71% of cases. Sixty-two percent (41/66) of lesions with thickened and 50% (17/34) with normal basement membrane had(More)
Purpura simplex (PS) is a chronic condition manifesting as purpura, dermatitis and pigmentation. Histologically it is characterised by extravasation of erythrocytes and perivascular inflammation without fibrinoid necrosis. Most cases of PS are idiopathic. In order to determine if PS can be drug induced, a prospective study of 183 patients with PS was(More)