[Distribution of HLA-DR antigens in unrelated giant cell arteritis].

HLA-DR antigen distribution was determined by lymphotoxicity on total lymphocytes for locus A.B.C.

[Value of transparietal lung biopsy in the cytological diagnosis of bronchiolo-alveolar carcinomas of the lung. Apropos of 3 cases].

Bronchiolo-alveolar carcinoma is a rare primary lung tumour, which is difficult to diagnose by cytological techniques. This peripheral tumour, which develops on pre-existing alveolar walls, is not visible on bronchial endoscopy and brushing is often negative. The cellular material derived from aspiration or expectoration is characterised by numerous papillae, without any cytonuclear criteria of malignancy.