The clinicopathological features of apocrine sweat gland carcinoma in five dogs were evaluated. All five dogs were ≥12 years old and had a solitary lesion with ulceration due to tumor invasion into the epidermis. Glandular formation, desmoplasia, and stromal invasion were histopathologically observed in all cases. Two dogs also had features of scirrhous carcinoma. Wide tumor excision resulted in good local control in all dogs, but one with scirrhous carcinoma (interdigital forelimb tumor) developed metastasis to a superficial lymph node 3 months after surgery. Another dog with scirrhous carcinoma (tumor fixed to the elbow) with vascular invasion died of widespread skin metastasis 6 months after surgery. The dog with the highest mitotic index (tumor near the vagina) died of multiorgan metastases 7 months after surgery. The other two dogs showed no metastasis during the follow-up period. Wide excision may be useful for local control of apocrine sweat gland carcinoma in dogs; however, the metastatic potential should be considered in some dogs with histological features of scirrhous carcinoma, a high mitotic index, or vascular invasion.

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A 10-year-old female bearded collie with a 7-month history of left forelimb lameness was diagnosed with biceps tenosynovitis. Biceps tenotomy was performed because both radiographic abnormalities and lameness had worsened during the 8-month period after the diagnosis. After arthrotomy, the biceps tendon was cut at the site of its origin, pulled out from the joint capsule, shortened, and sutured under the transverse humeral ligament. The dog regained its ability to walk normally without medication, and no lameness recurred for 20 months postoperatively. Biceps tenotomy via arthrotomy may be of value in dogs with biceps tenosynovitis that does not respond to medical therapy.

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A 5-month-old male Shih Tzu was diagnosed with a lateral ectopic ureter. The disorder was surgically treated; however, the dog’s urinary incontinence was not resolved. Several subsequent medical therapies were ineffective. Therefore, cellophane tape banding was applied around the dilated urethra 2 months postoperatively. After this surgery, the urinary incontinence completely disappeared and had not recurred at the time of this writing. However, an asymptomatic cystic diverticulum was found 1 month after cellophane tape banding. This method might be a therapeutic option for repairing urethral dilatation.

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A 6-year-old spayed female Pembroke Welsh corgi was presented with lingual squamous cell carcinoma. Computed tomography showed that the mass had infiltrated the pharyngeal region. Radiation therapy was scheduled, and a total dose of 44 Gy was delivered to the tumor lesion. The mass disappeared after treatment. However, the tumor recurred on day 305 of illness. The recurrent mass was treated by radiation therapy and subcutaneous administration of bleomycin once weekly for 20 weeks. The tumor did not recur again until day 655 of illness. The dog survived until day 718 of illness, which is a longer duration than in previous reports.

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