Clinics in diagnostic imaging (32). Opportunistic pneumonia in acquired immunodeficiency syndrome (AIDS).

A 24-year old HIV-positive patient presented with fever and productive cough. Chest radiograph showed a cavitating pulmonary infiltrate. Diagnosis of Nocardosis was made from modified acid-fast stain of his sputum specimen.

Cancer of the oral cavity, pharynx/larynx and lung in North Thailand: case-control study and analysis of cigar smoke.

The unusually high relative frequency of cancer in the laryngeal region in males (18% of all histologically diagnosed cancers) and a sex ratio of unity for lung cancer in Northern Thailand were further explored in a hospital-based case-control study in Chiang Mai. This compared patients having cancers of the oral cavity (including oropharynx), larynx, hypopharynx and lung, with controls in relation to smoking and chewing habits. Statistical analysis indicated that chewing betel is strongly associated with the occurrence of oral cancer in both sexes, and with cancer of the laryngeal region in males.