A 7-month-old cat presented with recurrent bleeding from the plantar region of the left hind limb. Histopathological examination of a punch biopsy sample suggested the lesion was a vascular malformation. After the punch biopsy, bleeding from the biopsy site did not stop; therefore, electrocautery was performed. Although the amount of bleeding decreased, it continued to recur. Contrast-enhanced computed tomography performed on the 30th day after the first visit revealed angiogenesis and vasodilation around the affected area. On the 37th day, the fourth and fifth fingers were amputated to relieve the bleeding. A diagnosis of dermal lymphatic malformation was made based on immunohistochemical examination of the amputated tissue. Histopathological margins were secured, but a gross examination performed 1 month after surgery revealed some small cysts on the skin surface, suggesting that complete resection may not have been achieved. Nevertheless, the bleeding stopped 20 months after the surgery, and the cat had no trouble in returning to daily living activities. We herein discuss the diagnosis and treatment of this rare case of dermal lymphatic malformation in a cat.
A 1-year-old male dog was diagnosed with a biting louse infestation caused by Heterodoxus spiniger and was treated successfully with a single 2.5 mg/kg body weight oral dose of sarolaner. After treatment, there was a rapid improvement of the skin lesions and pruritus. The dermatological examination was within normal limits and lice were absent on day 28. To the authors’ knowledge, this is the first published report of the use of an isoxazoline to treat a biting louse infestation caused by H. spiniger in a dog.
A 5-month-old female borzoi presented with symmetrically demarcated follicular peach-coloured macules on the ventral abdomen. Histopathological examination findings revealed vascular dilations along with enlargement of the sebaceous glands. Clinically and histopathologically, the lesions spontaneously regressed with maturity and did not reappear. It was suspected that the pubertal endocrine system might have been involved in the pathogenesis.