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Granular cell tumor in an endangered Puerto Rican Amazon parrot (Amazon vittata)

Avian Pathology

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Abstract

A 3 cm diameter mass from the metacarpus of a Puerto Rican Amazon parrot was diagnosed as a granular cell tumour based on light microscopy. The cytoplasmic granules were periodic-acid Schiff positive and diastase resistant. Ultrastructural characteristics of the cells included convoluted nuclei and the presence of numerous cytoplasmic tertiary lysosomes. This is only the second granular cell tumour reported in a bird. We speculate that most granular cell tumours are derived from cells that are engaged in some type of cellular degradative process, creating a similar morphologic appearance, but lacking a uniform histogenesis.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Granular cell tumor in an endangered Puerto Rican Amazon parrot (Amazon vittata)
Series title:
Avian Pathology
Volume
28
Issue:
4
Year Published:
1999
Language:
English
Contributing office(s):
National Wildlife Health Center
Description:
p. 345-348
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Avian Pathology
First page:
345
Last page:
348
Number of Pages:
4