Abstract
A 7-year-old, female, Miniature Dachshund underwent an excision of an anal sac apocrine gland adenocarcinoma without hypercalcemia, which was in the right side of the anal canal, 3×2.5×2.5 cm in size. A sublumbar lymph node was enlarged to 2.5 cm with neoplastic cells with moderate atypia. The area was irradiated in four fractions once a week for a total of 24 Gy. On day 498, the mass in the sublumbar lymph node area was enlarged to 3.2 cm, and two lung metastases were apparent. Therefore, partial resection of the pubis and ischium was performed to dilate the pelvic cavity on day 511. The bones were removed using a rongeur, the pubis was resected up to the junction with the ilium, and the ischium was resected up to the diameter of the rectum. The resected edges of bone were ground and smoothed. The muscles were not sutured, but the subcutaneous layer and skin were sutured. The evacuation difficulties and stool flattening disappeared on the day following the operation, and there was no evidence of lameness. On day 657 after the primary surgery, the evacuation difficulties recurred. On day 934 after the primary operation, it was reported that time required for defecation continued to increase gradually but that the general condition was good.
