This is the case of a 9 yo, spayed Lab female dog presented for a large perianal mass. The mass is diagnosed as a soft tissue sarcoma and during staging there is US and CT evidence of a large left adrenal mass and iliac lymphnode alteration. After proper owner discussion a one stage surgery is recommended. Under general inhalatory anethesia and epidural block with bupivacaine and buprenorphine first step is left adrenal mass excision, the second step is iliac lymphnode excision and after abdominal closure with non-resorbable suture the last step is excision with 2 cm lateral margins and deep muscle/fascia layer of the perianal STS. Recovery is good, pathology…

This is a case of a large Soft Tissue Sarcoma on the lateral aspect of the right stifle. This a male dog, intact, previously diagnosed with a fast growing STS, now 4.5 cm. STS are of great local concern, especially on limbs as the surgical dose requires at least 3 cm in lateral and at least one deep unaffected fascial plane. This requirement produces numerous challenges for the surgical defect closure. In this case the lateral margins were of 3 cm and in the deep, one unaffected muscle layer was included. This produced a large defect which was closed with a large inguinal flank fold flap. The pathology report confirmed…