Incidence of Tumors in Hamster Skin Biopsies

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  • ハムスターの皮膚生検における腫瘍発生率
  • ハムスター ノ ヒフセイケン ニ オケル シュヨウ ハッセイリツ

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Abstract

Histopathological studies of hamster skin biopsies sent to the Kitasato Institute Companion Animal Laboratory between July 1994 and September 2001 led to diagnosis of tumors in 229 of 257 cases (89.1%). More than 70% of the tumors occurred in Djungarian hamsters; and 60% were benign epithelial tumors occurring predominantly in the cervix, chest, abdomen, axillaries, and anterior and lateral parts of animals less than two years old. In males, proliferative fasciitis appeared mostly in the abdomen. Papilloma and squamous cell carcinoma were frequent in the aurical, whereas apocrine adenoma and adenocarcinoma were dominant in females. Lymphosarcoma developed mostly in the cervix of Golden hamsters less than one year of age.

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