Résumé
Fifty nodes of Hodgkin's disease, 50 of non-Hodgkin's lymphoma and 20 of reactive hyperplasia revealed varying degree of mast cell reactivity. It was maximum in reactive lymph nodes, sinuses and interfollicular areas being infiltrated more than zones. The number of mast cells was more in nodular sclerosis variety of Hodgkin's disease than other Rye-subtypes, and more in Hodgkin's group than non-Hodgkin's, out of the latter, the diffuse histiocytic lymphoma revealed higher number. Analysis of a larger series and follow-up of these patients are indicated to establish the possible reactionary nature of mast cell reactivity in lymphomas, and the prognostic bearing, if any.
Sujets)
Hyperplasie lymphoïde angiofolliculaire/anatomopathologie , Maladie de Hodgkin/anatomopathologie , Humains , Lymphome malin non hodgkinien/anatomopathologie , Mastocytes/physiologieRésumé
Mast cell distribution in the affected skin and in the apparently normal skin at least 10 cm away from the lesion was studied in 250 leprosy patients. These cells were found and were more numerous in the apparently normal skin of established cases of leprosy as well amongst indeterminate group. Absence of mast cells was conspicuous in 16.7% LL, 41.7% BB, 40.9% BT, and 68.0% TT lesions. It is suggested that mast cells might play a role in the early stages of the disease and in postreactional connective tissue proliferation.