[Juvenile gangrenous vasculitis of the scrotum].

Objective: To describe clinical and pathological findings of a new case of juvenile gangrenous vasculitis of the scrotum, a peculiar and unusual (only 7 cases, approximately, have been previously reported) type of scrotal gangrene described by Piñol in 1973.

Methods: A 24 year-old male presented at the emergency room with a right scrotal necrotising cutaneous lesion and fever. Physical examination, complete blood count, biochemical test, roentgenographic abdominal and thoracic findings, microbiological test and biopsy were performed.

[Perirenal involvement in Waldenström disease].

Objective: To describe radiological, histological findings and cytometric features of perirenal masses: an unusual involvement pattern of the kidney by Waldenström disease. This pattern, not associated with nodal regional disease should be considered in the differential diagnosis of perirenal pathology (extramedullary hematopoiesis, liposarcoma, haematoma..