Management and outcome of concurrent conjunctival haemangiosarcoma of the third eyelid and conjunctival/cutaneous haemangiosarcoma of the eyelids in a cat

Abstract

A 15‐year‐old, female, domestic shorthaired cat presented with a small, red, bilobulated pedunculated mass attached to the anterior surface of the left third eyelid in addition to red discoloration of the left upper and lower eyelids in the region of the medial canthus. Histopathology and immunohistochemistry were consistent with conjunctival haemangiosarcoma and conjunctival/cutaneous haemangiosarcoma of the third eyelid and eyelids, respectively. Haemangiosarcoma of the third eyelid has been described in three cats historically, with no recurrence following complete excision in two cases and unknown outcome in the case of incomplete excision. This report describes the case's diagnosis, treatment and post‐operative outcome.