[Granulomatous skin disease after an exotic injury].
Piranhas are feared freshwater fishes commonly found in the waters of southern Venezuela to the north of Argentina. At present this species is a favourite domesticated article of our aquarists. The authors describe the histopathologic picture of a cutaneous lesion of the right hand thumb of a 60-year old piranha keeper who was bitten by this predatory fish. A firm node with increasing soreness gradually developed in the area of the lesion, and after 7 months the symptoms of the carpal tunnel syndrome were also present. Granulomatous foci--some sarcoid-like, others with central necrosis--were permeated with fibrinoid substance. Epithelioid granuloma cells with huge incorporated multinuclear elements were covered mainly by T-lymphocytes. Ziehl-Neelsen stain did not prove the presence of diagnostic acid-fast rods. Only in some macrophages rare acid-fast spheric microstructures were present in the cytoplasm. Both the local dermatologic finding and histological examination gave evidence that the skin was infected with atypical mycobacteria--swimming pool granuloma.
Adamicová
K
K
Ustav patologickej anatómie MFN a JLF UK, Martin. adamicova@jfmed.uniba.sk
Fetisovová
Z
Z
Strmenová
V
V
Maarouf
Z
Z
Ondrejovic
P
P
Mad'ar
R
R
Mellová
Y
Y
D000818:Animals; D001733:Bites and Stings / Q000150:complications* / Q000382:microbiology; D005399:Fishes; D006099:Granuloma / Q000209:etiology / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000209:etiology / Q000473:pathology*; D019910:Mycobacterium marinum; D017192:Skin Diseases, Bacterial / Q000209:etiology / Q000473:pathology*