SPONTANEOUS MAMMARY FIBROADENOMAS IN AWISTAR RAT COLONY
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Date
2011-12
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Abstract
Necropsy examination was conducted on two adult female Wistar rats, aging 16 and 18 months
that were presented with a history of a gradually increasing mass in their lower abdominal region.
Gross examination revealed firm, hard, localized, well-encapsulated masses in the inguinal pair of
the mammary glands. Microscopically, the acinar structures were surrounded by distinct interlobular
and intralobular connective tissues. Acini were of varying shapes and sizes and irregularly placed
among the fibrous stroma. The histological pattern and the nature of the tumour in older female
rats were sufficient to confirm the diagnosis as mammary fibroadenomas.
Description
TNV_IJAR_2011_45(4)322-323