A case report on trichoblastoma in Labrador dog

An oval shaped growth below jaw was surgically removed from a ten year old female Labrador dog measuring 6 cm in diameter. The growth was firm in consistency and grey-white in colour. Microscopic examination showed basaloid cells arranged in ribbon like cords with palisade appearance and had prominent nuclei with scanty cytoplasm. At other places the cells were arranged like cords radiated from central Island of densely packed cells. The histological features observed were characteristic of trichoblastoma of mixed (ribbon with medusoid) subtype.