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Anal Sac Cancer Treatment Martinsville IN

It is important to keep an open mind. Differential diagnosis for perianal disease includes anal sac impaction, abscess (which may rupture), sacculitis, perianal adenomas, perineal hernias, perineal fistulas and other malignancies, such as perianal malignant melanoma. Any of these conditions affect the quality of life of the patient.

Animal Hospital-Martinsville
(765) 349-7387
392 S Main St
Martinsville, IN

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College Mall Veterinary Hosp
(812) 334-1400
4517 E Morningside Dr
Bloomington, IN

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Neuter Scooter
(812) 332-7525
3789 E Bethel Ln
Bloomington, IN

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Foley, Sarah, Dvm - College Mall Veterinary Hosp
(812) 334-1400
4517 E Morningside Dr
Bloomington, IN

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Williamson Emily Dvm
(317) 422-5255
751 N Road 700 W
Bargersville, IN

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Country Critters Veterinary
(317) 996-2727
125 S Chestnut St
Monrovia, IN

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Cox, Mary Alice, Dvm - Bloomington Veterinary Hosp
(812) 339-6115
115 N Smith Rd
Bloomington, IN

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College Mall Veterinary Hospital
(812) 334-1400
4517 E Morningside Dr
Bloomington, IN

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Good Shepherd Veterinary Services
(317) 422-8448
250 S State Road 135
Bargersville, IN

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Towne & Country Vet Clinic
(812) 332-1429
3140 N Smith Pike
Bloomington, IN

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Step-by-Step Surgery for Anal Sac Cancer

Anal sac cancer causes local problems, mainly because of pain and straining to defecate. Anal sac apocrine gland adenocarcinoma also leads to systemic issues, including hypercalcemia and metastasis. Affected patients are older female dogs in 90 percent of the cases. A few cases have been described in cats.

It is important to keep an open mind. Differential diagnosis for perianal disease includes anal sac impaction, abscess (which may rupture), sacculitis, perianal adenomas, perineal hernias, perineal fistulas and other malignancies, such as perianal malignant melanoma. Any of these conditions affect the quality of life of the patient.

anal sac adenocarcinoma
A preoperative view of a left anal sac adenocarcinoma in a 9-year-old male Akita mix. Photo courtesy of Dr. Phil Zeltzman.
An anal sac tumor is suspected on rectal exam. If it is large enough, subcutaneous swelling may be visible. Occasionally, the tumor is bilateral. A diagnosis can sometimes be reached with cytology if enough cells exfoliate. Histopathology gives a definitive diagnosis. Incisional biopsies are rarely used, whereas excisional biopsy is typically the preferred course of action.

Standard preoperative workup includes a CBC and blood chemistry, including a calcium level. Approximately 25 percent of patients are affected by paraneoplastic hypercalcemia (See our bonus content on differential diagnosis of hypercalcemia). Abdominal radiographs or ultrasound are helpful to diagnose metastasis to the sublum...

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