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What Are Apocrine Gland Tumors? Are They Dangerous For Dogs? Apocrine tumors occur in the apocrine glands, the major type of sweat glands in dogs. These lesions are quite common in dogs as they get older. Around 70% of these apocrine tumors are non-malignant in nature and can be treated safely.
Some dogs may experience an average survival time of more than 3 years. Recurrence of tumor at the surgical site occurs in up to 45% of cases. Tumors less than 2.5 centimeters in size have a better prognosis. Dogs without enlarged lymph nodes or other metastases have a better prognosis.
In a series of apocrine gland tumors, 40 of 44 dogs and 8 of 10 cats had malignant apocrine gland carcinomas. 139 In dogs the median age at diagnosis is 9 years, with most tumors occurring between 6 and 11 years of age. 140 Golden retrievers and the Treeing Walker coonhound may be predisposed. 138,139 The thoracic limbs are the most common site ...
The prognosis for dogs with apocrine gland adenocarcinomas depends largely on the size of the tumor at diagnosis, whether it has spread to other tissues or lymph nodes, and the success of the surgical removal.
1 wrz 2022 · In one study, tumors smaller than 10 cm 2 had a better median survival time of 584 days compared to 292 days for those dogs with a tumor larger than 10 cm2. 3 Additional studies with a cut-off of 2.5cm for primary tumor diameter showed improved outcomes for dogs with smaller tumors. 6, 63 In one of these studies, dogs with a tumor less than 2.5 ...
Apocrine gland adenomas include apocrine adenomas and apocrine ductular adenomas. Apocrine adenomas appear as firm to soft cysts, seldom larger than 1.6 inches (4 centimeters) in diameter. They contain varying amounts of clear to brownish fluid.
Anal sac adenocarcinoma (ASAC) is a malignant tumor arising from the apocrine glands in the wall of the anal sac. It accounts for about 17% of all perianal tumors in the dog. Females were previously thought to have been predisposed, but more recent studies have shown an approximately equal sex distribution.
