Suppurative Inflammation of Apocrine Sweat Glands (Suppurative Hidradenitis) in the Dog: A Retrospective Clinicopathological Analysis of 100 Cases

Resume— Une analyse retrospective clinicopathologique a ete menee chez 100 chiens presentant une hydradenite suppurative diagnostiquee par biopsie cutanee. Aucune predisposition d'âge, de race ou de sexe n'a ete mise en evidence. Tous les chiens presentaient cliniquement une folliculite bacterienne, ou une furonculose, ou les deux, qu'elle soit primaire ou secondaire a d'autres dermatoses. Aucene lesion clinique n'etait pathognomonique d'hidradenite suppurative. Chez 73 chiens, l'hidradenite suppurative etait associee microscopiquement a des degres variables d'inflammation du follicule pileux. Chez 27 chiens, l'hidradenite suppurative etait la seule evidence histologique d'inflammation annexielle. L'observation histopathologique d'hidradenite suppurative suggere l'existence sur le plan clinique d'une folliculite bacterienne, d'une furonculose, ou des 2. [Scott, D.W. Suppurative inflammation of apocrine sweat glands (suppurative hidradentis) in the dog: a retrospective clinicopathological analysis of 100 cases (inflammation suppurative des glandes sudorales apocrines (hidradenite suppurative) chez le chien: une analyse retrospective clinicopathologique de 100 cas). Resumen— Se llevo a cabo un estudio clinicopatologico retrospectivo en 100 perros con hidradenitis supurativa diagnosticada mediante biopsia cutanea. No se detecto predominancia alguna de raza, sexo o edad. A todes los perros se les habia diagnosticado clinicamente foliculitis o furunculosis bacteriana, o ambas, ya sea de forma primaria o secundaria a otras dermatosis. No se encontraron lesiones clinicas especificas indicativas de hidradenitis supurativa. En 73 animales, la hidradenitis supurativa estaba asociada con varios grados de inflamacion folicular a nivel microscopico. En los 27 casos restantes, los anejos presentaban unicamente hidradenitis supurativa. La presencia de hidradenitis supurativa a nivel microscopico sugiere la existencia de foliculitis o furunculosis bacteriana clinicas, o de ambas. [Scott, D.W. Suppurative inflammation of apocrine sweat glands (suppurative hidradenitis) in the dog: a retrospective clinicopathological analysis of 100 cases (inflamacion supurativa de las glandulas sudoriparas apocrinas (hidradenitis supurativa) en el perro: estudio clinicopatologico retrospectivo de 100 casos). Abstract— A retrospective clinicopathological study was conducted on 100 dogs with suppurative hidradenitis as determined by skin biopsy. No apparent age, breed, or sex predilections were recognized. All dogs had been given a clinical diagnosis of bacterial folliculitis, furunculosis, or both of these, whether primary or secondary to other dermatoses. There were no clinical lesions that uniquely suggested the presence of suppurative hidradenitis. In 73 dogs, suppurative hidradenitis occurred in conjunction with varying degrees of hair follicle inflammation microscopically. In 27 dogs, suppurative hidradenitis was the only histological evidence of adnexal inflammation. The histopathologic finding of suppurative hidradenitis suggests the existence of clinical bacterial folliculitis, furunculosis, or both of these.