[Granulomatous skin disease after an exotic injury]. / Granulomatózne ochorenie koze po exotickom poranení.

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.

[Pathologic interpretation and clinical aspects of invasive basalioma]. / Invazívny bazalióm v interpretácii patológa a klinika.

Bioptic evaluations of basaliomas require from pathologists to perform histogenetic classification, type ascertainment, TNM system classification, as well as detection of the presence or absence of tumor elements on the margins and base of excisions. The systems of histologic type classification of basaliomas utilized by pathologists are inconsistent with the terminology used by clinicians. The presented work is aimed at correlation of the current terminology of invasive basaliomas from the view of dermatologists and pathologists. The method of retrospective study was used, namely in a 100 cases of histologically verified basaliomas followed by comparisons with clinical diagnoses and catamnestic data. Average age in male patients was 66.4 year, and 67.6 year in female patients. 11 cases of histologically ascertained types of basaliomas included two cases of invasive biological characteristics detected at control examinations after 3 months, while the margins and base of the former excisions were without tumor elements. In none of the 9 cases of clinically judged invasive basaliomas the histologic picture yielded signs of tumor invasiveness. The results imply that the clinical diagnosis of a variant of basalioma may represent information of its presupposed characteristics. An important task of a pathologist is however to notify by means of accurate ascertainment of the histologic variant in cases of morpheaphorm and fibroepithelial basalioma the possible invasive character of the particular tumor. (Tab. 4, Ref. 14.)