title: Testicular malacoplakia.
abstract: We report the twentieth case in the world literature of testicular malacoplakia. This lesion occurs mainly in middle-aged men, appearing clinically as epididymo-orchitis or enlargement of the testicle with fibrous consistency and some soft areas. Malacoplakia is now considered a nonspecific inflammatory granulomatous lesion subsequent to an infection by gram-negative bacteria. In our case Escherichia coli was cultured in the urine and testicular tissue. The ultrastructural study shows the histiocytic nature of the cellular infiltrate as well as the morphology of Michaelis-Gutmann bodies. Bacilliform structures were not found. The cellular and humoral immunological studies did not show alterations.
mesh_terms: D004927:Escherichia coli Infections / Q000175:diagnosis; D006644:Histiocytes / Q000648:ultrastructure; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D008287:Malacoplakia / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D013733:Testicular Diseases / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology