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The golden-headed lion tamarin is a primate from the Brazilian Atlantic Forest. A female captive of the Fundação Zoo-Botânica de Belo Horizonte-MG, died after anesthesia and caudectomy. Necropsy was performed and tissue samples were collected for histopathology. In the liver, there was a hepatocellular carcinoma, associated with portal fibrosis, biliary duct proliferation, and megalocytosis. These changes are suggestive of chronic aflatoxicosis. Hepatocellular carcinoma is a rare neoplasia in non human primates, and the carcinogenic effect of aflatoxin on these animals has already been demonstrated. [ABSTRACT FROM AUTHOR]

It was studied the trachea and lungs morphology of two sauins specimens. The animals were donated by the Paragominas Bauxite Miner to the Morphological Laboratory Animal Research (MLAR) from Federal Rural University of Amazonia -- UFRA. The specimens were stored in 10% formalin, dissected and then, the trachea and the lungs were removed. The trachea was divided into three regions (cranial, middle and caudal third). It was measured its height and width using a digital caliper and we also counted the tracheal rings (32 units on each animal). We registered the following lobes in the lungs: cranial, middle, caudal and accessory (right side) and right cranial (cranial and caudal portion) and left caudal lobe (left side). [ABSTRACT FROM AUTHOR]