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Adenocarcinoma of the Anal Sacs 1399

Adenocarcinoma of the Anal Sacs
VetBooks.ir Histologic diagnosis of anal sac adenocarcinoma

• Thoracic and abdominal imaging
• Serum biochemical profile +/- ionized calcium

Is patient hypercalcemic? Yes Treat hypercalcemia
No
Evidence of distant metastasis beyond regional lymph nodes?
No Yes
Is surgery alone sufficient for complete Treat palliatively with
resection of primary tumor as well No surgery, radiation,
as functional and cosmetic outcome? chemotherapy as indicated;
the efficacy of adjuvant
Yes chemotherapy remains
poorly defined
Wide surgical excision with
evaluation of histologic margins

Complete resection? No Combine radiation therapy and
surgery to treat the primary tumor
Yes

Evidence of sublumbar Yes Consider surgery and/or radiation
lymphadenopathy? therapy for regional lymph nodes
No
Consider chemotherapy for the treatment
of micrometastatic disease
UPDATED AND EDITED BY: Leah A. Cohn, DVM, PhD, DACVIM
ORIGINALLY WRITTEN BY: Elizabeth A. McNiel, DVM, PhD, DACVIM, DACVR

Clinical Algorithms

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