Fibroepithelial hyperplasia in an entire male cat: cytologic and histopathological features

Feline Mammary Fibroepithelial Hyperplasia: A Clinical Approach

“…Infrequently, descriptions of FEH in spayed queens or male cats supposedly not submitted to steroid treatment have been published [11,23], but the doubt remained on the absence of an involuntary hormonal treatment.…”

“…Nevertheless, in animals suffering from non-complicated mammary fibroepithelial hyperplasia, most parameters analysed (blood haematology and biochemistry) were within the normal range values for the species [11,14]. In animals with FEH co-existing with mastitis and ulceration, it can be found anaemia [10,39], normal to increase packed-cell volume [12,13,39] and the leukocyte count near the maximum normal limit or increased [10,12,39].…”

“…However, ulceration may develop secondary to perfusion problems derived from skin overstretching, with local ischemia, leading to abscessation, or also due to excessive grooming. Ulceration predisposes the diseased gland to mastitis or abscessation and subsequently to systemic illness [10][11][12]. In such situations, depending on the severity of the process, the skin may be wet, exudative, haemorrhagic and abnormal glandular discharge, with necrotic debris or purulent.…”

“…Recurrence of the situation, although possible, remains controversial [6,[11][12][13]. Nevertheless it is an important issue when discussing the therapeutic approach with owners.…”

“…Although it rapid growth may cause concern, fibroepithelial mammary lesions are reversible, and the volume of the mammary masses tend to decrease after luteolysis or at the end of exogenous progestagen activity [4,5,11].…”