This is a case report of recurrent bilateral parotid swelling with intraglandular gaseous bubbles in a 14-year-old boy, together with a review of the literature on this condition, which is usually called pneumoparotitis. The disorder has been reported as an occupational hazard in wind instrument players and glass-blowers and also as a rare non-occupational disease, mainly in adolescents and often associated with psychological problems.

A case of iatrogenic tracheal dilatation is presented. This potentially fatal complication of endotracheal intubation may escape early detection. It is well demonstrated by CT scanning.

A case of cutaneous T-cell lymphoma is presented in which the diagnosis was obscured by a concomitant granulomatous infiltrate. A working diagnosis of tuberculosis delayed appropriate treatment for several months over which time rapid progression of the disease was seen. Inclusion of overlying skin in the repeat biopsies yielded the histological information to establish the correct diagnosis and there was rapid regression on completion of a course of radiotherapy.

Cystic lymphangioma is a congenital lesion which rarely presents in adult life and even less commonly arises within salivary tissue. We report the sudden appearance of a large cystic lymphangioma within the parotid gland of a young man and discuss the management of this rare condition.

Necrotizing sialometaplasia is a benign self-limiting disorder which can simulate malignancy. We report the third such case of nasal fossa involvement in the literature. The pathology of this condition is discussed.