Aceste tumori pot fi maligne sau benigne. Malignitatea se manifesta intr-o proportie de 50%. In acelasi timp, 50% dintre pacienti prezinta tumori multiple.
Cateaua prezinta doua lanturi de glande mamare (stang si drept), legate intre ele prin vase limfatice care asigura si difuzarea pe cale limfatica a metastazelor. Sistemele afectate sunt cel reproductiv iar prin metastazare cele: respirator, osos si nervos. Exista situatii in care metastazele pot afecta si alte sisteme. O predispozitie crescuta pentru incidenta tumorilor mamare apare dupa varsta de 10 ani, dar ele pot aparea la orice varsta.
Tumorile pot fi mobile si bine delimitate, cum este cazul celor benigne, sau puternic aderente la piele sau/si de peretele abdominal, cum este cazul celor maligne. Frecvent, aceste tumori ulcereaza si se suprainfecteaza.
Diagnosticul diferential se face fata de: lipoame, hiperplazie mamara si inflamatiile simple ale glandei mamare. Obligatoriu conduita de diagnostic trebuie sa cuprinda radiografia toracica si abdominala, pentru a evidentia posibile metastaze limfatice. Diagnosticul de certitudine se pune prin efectuarea examenelor biopsice si histopatologice.
Statistic, tumorile mamare pot fi clasificate dupa origine ca fiind: 50% benigne, 42% adeno, 4% carcinomatoase si 4% sarcomatoase. In numarul viitor voi continua descrierea tumorilor mamare.
Liviu Harbuz,
DVM Ph. D
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