Reports of neoplasia in Chiroptera species are rare.6,10 This retrospective study describes five types of neoplasia identified within a captive population of male Egyptian fruit bats (Rousettus aegyptiacus) housed in a zoo from 2004 through November of 2014. Tumor types identified include fibrosarcoma, cutaneous lymphoma, benign focal bronchioloalveolar neoplasm, anaplastic sarcoma, and sebaceous epithelioma. To the author's knowledge, aside from a recent report of focal brochioloalveolar adenoma,8 these tumor types have not previously been described in the Rousettus species, nor in chiropterans in general. Based upon these findings and other recent publications regarding R. aegyptiacus, neoplasia does appear to be a significant cause of morbidity and mortality in captive members of this megachiropterid species.
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