Effect of long-term hyperbaric stress on ammonia metabolism in humans.

A significant increase in blood urea was found in 11 U.S. Navy divers during 8 d of air saturation hyperbaric exposure.

Extreme thrombocytosis associated with malignancy.

A case is described in which a platelet count of 6,000,000/mm3 occurred in association with adenocarcinoma of the lung and remitted following definitive radiotherapy of the primary lesion. Despite the magnitude of the platelet elevation, thrombohemorrhagic phenomena were not observed. Extreme thrombocytosis of this magnitude is rare in either primary or secondary disorders of thrombopoiesis.

Intralobar pulmonary sequestration infected with a mycobacterium of the Battey-avium complex.

A 24-year-old man with an intralobar pulmonary sequestration infected with a Mycobacterium of the Battey-avium complex is presented and discussed.