Fig. 1From: Challenges in diagnosing canine spindle cell tumours using immunohistochemistry, illustrated by three nonpigmented malignant cases from the nictitating membraneHemangiosarcoma in the nictitating membrane of an 8-year-old Dachshund. (a) Hemangiosarcoma in situ before third resection. The tumour arises from the palpebral side of the nictitating membrane of the right eye and has a multilobulated and cystic appearance. (b) Subgross view of the excised nictitating membrane showing a nodular growth in the conjunctival substantia propria on the palpebral side. Hematoxylin and eosin (bar = 2 mm). (c) High magnification view of the neoplastic proliferation, showing plump spindle cells lining irregular vascular-like channels. Hematoxylin and eosin (bar = 100 μm)Back to article page