Adenomatous hyperplasia of the thyroid gland in beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary and Hudson Bay, Quebec, Canada.

We evaluated thyroid gland lesions in beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary (n = 16) and Hudson Bay (n = 14). Follicular cysts and nodules of adenomatous hyperplasia of the thyroid gland were found in eight and nine adults from the St. Lawrence Estuary (n = 10), respect...

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Bibliographic Details
Main Authors: Mikaelian, I, Labelle, P, Kopal, M, De, Guise S, Martineau, D
Format: Text
Language:unknown
Published: The Mouseion at the JAXlibrary 2003
Subjects:
Animals
Follicular-Cyst
Histological-Techniques
Hyperplasia
Quebec
SUPPORT-NON-U-S-GOVT
Thyroid-Gland
Thyroid-Nodule
Whales
Canada
Hudson
Hudson Bay
Beluga
Beluga*
Delphinapterus leucas
Online Access:https://mouseion.jax.org/stfb2000_2009/636
http://www.vetpathology.org/cgi/content/abstract/40/6/698
Description
Summary:We evaluated thyroid gland lesions in beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary (n = 16) and Hudson Bay (n = 14). Follicular cysts and nodules of adenomatous hyperplasia of the thyroid gland were found in eight and nine adults from the St. Lawrence Estuary (n = 10), respectively, and in four and six adults from Hudson Bay (n = 14), respectively. The total volume of the lesions of thyroid adenomatous hyperplasia was positively correlated with age in both populations. Comparison between populations could not be performed because of differences in age structures of sample groups. Beluga whales from both populations have unique thyroid lesions among marine mammals.

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