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Peer-reviewed veterinary case report

Canine invasive lobular carcinoma of the mammary gland: morphological and immunohistochemical characterizations of three cases.

Journal:
Journal of comparative pathology
Year:
2011
Authors:
Ressel, L et al.
Affiliation:
Department of Animal Pathology · Italy
Species:
dog

Abstract

Invasive lobular carcinoma (ILC) represents 15% of invasive human breast tumours. This report describes the morphological and immunohistochemical features of three canine mammary tumours comparable with human ILC. These tumours were composed of a non-delimited proliferation of discrete cells infiltrating fibrous connective tissue. Multifocal in-situ carcinoma associated with invasive lesions was present. Invasive tumour cells and in-situ lesions expressed cytokeratin and CK34betaE12, but not E-cadherin. Based on these morphological and immunohistochemical characteristics, the tumours were classified as canine ILC.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/20961557/