Mast cell quantitation in non- neoplastic polypoidal nasal lesions.

The distribution and abundance of mast cells was studied in 110 nasal non- neoplastic polypoidal lesions. In most of the polyps of all kinds, the epithelium showed less than 5000 mast cells/mm(1). Out of the 72 so- called "nonallergic polyps", 29 (40,3%) showed more than 20,000 mast cells/mm(1) in the subepithelial layer, and 30 (41.

Role of imprint cytology in the diagnosis of gastrointestinal tract malignancies.

Endoscopic biopsies obtained from 275 patients (180 from the upper gastrointestinal tract and 95 from the lower gastrointestinal tract) were studied to compare the accuracy of biopsy imprint cytology and histology in the diagnosis of gastrointestinal lesions, and also to establish the degree of reliability of imprint cytology alone for an early diagnosis of malignancy. Biopsy histology results were found to be correct in 100% cases. Imprint cytology had an overall accuracy of 100%, 96.

Mast cells in Helicobacter pylori associated antral gastritis.

Mast cells are known to be effector cells in various inflammatory reactions, but their role in gastritis is unclear. The present study was undertaken to investigate the extent of mast cell involvement in antral gastritis with and without Helicobacter pylori (H. pylori) infection and thus evaluate the possible role of mast cells in the pathogenesis of H.

Sclerosing mediastinitis: a case report.

A rare case of sclerosing mediastinitis in a 38 year old male is described. This interesting case illustrates how a seemingly benign fibrosing condition may lead to disastrous and fatal complications.