A comparison of medullary thyroid carcinoma and thyroid adenocarcinoma in dogs: a retrospective study of 38 cases.

J. R. Carver, Amy Kapatkin, A. K. Patnaik

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Abstract

The medical records of 38 dogs with thyroid neoplasia that were treated by surgical excision of the tumor, or had an incisional biopsy performed as a diagnostic procedure, were reviewed. Of the 38 dogs, 21 (55%) had resectable tumors, whereas 17 (45%) had an incisional biopsy as the tumors were nonresectable. All dogs had an initial diagnosis of thyroid carcinoma. The type of carcinoma was confirmed in 33 dogs by histological and immunohistochemical examination. Twelve dogs (36%) had medullary thyroid carcinoma, and 21 dogs (64%) had thyroid adenocarcinoma. Of the 12 dogs with medullary thyroid carcinoma, 10 (83%) had resectable tumors. Of the 10, three (30%) had at least a 1-year survival. None had radiographic evidence of metastasis at the time of surgery. Of the 21 dogs with thyroid adenocarcinoma, 11 (52%) had resectable tumors. Of the 11 dogs, five (45%) had at least a 1-year survival. Three dogs had radiographic evidence of metastasis at the time of surgery. Of 10 dogs with nonresectable thyroid adenocarcinoma, two dogs (20%) had at least a 1-year survival. In the dogs in this study, medullary thyroid carcinoma was more prevalent than previously reported. Most of the medullary thyroid carcinomas were well circumscribed and resectable. Medullary thyroid carcinoma may possess gross and histological characteristics of a less malignant nature when compared with other thyroid carcinomas.

Original languageEnglish (US)
Pages (from-to)315-319
Number of pages5
JournalVeterinary surgery : VS : the official journal of the American College of Veterinary Surgeons
Volume24
Issue number4
StatePublished - Jul 1995
Externally publishedYes

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adenocarcinoma
retrospective studies
carcinoma
Thyroid Gland
Adenocarcinoma
Retrospective Studies
Dogs
dogs
neoplasms
Neoplasms
Thyroid Neoplasms
metastasis
Medullary Thyroid cancer
biopsy
surgery
Neoplasm Metastasis
Biopsy
excision
Medical Records
Carcinoma

ASJC Scopus subject areas

  • veterinary(all)

Cite this

A comparison of medullary thyroid carcinoma and thyroid adenocarcinoma in dogs : a retrospective study of 38 cases. / Carver, J. R.; Kapatkin, Amy; Patnaik, A. K.

In: Veterinary surgery : VS : the official journal of the American College of Veterinary Surgeons, Vol. 24, No. 4, 07.1995, p. 315-319.

Research output: Contribution to journalArticle

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