Japanese Journal of Veterinary Anesthesia & Surgery
Online ISSN : 2189-6631
Print ISSN : 2189-6623
ISSN-L : 2189-6623
Letter
Canine Intramuscular Mast Cell Tumor in the Biceps Femoris Muscle: A Case Report
Kentaro KOJIMASaori KOJIMAEri USTUMIAkiko ENARI
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JOURNAL FREE ACCESS

2020 Volume 51 Issue 1 Pages 13-15

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Abstract

Mast cell tumors (MCT) are the most common malignant cutaneous tumors in dogs, but there is very little information on intramuscular MCT. Here we report a case of a surgically treated canine MCT occurring in the biceps femoris muscle. An 11-year-old spayed female labrador retriever was presented with an intramuscular mass 5.7 cm in greatest diameter located in right biceps femoris muscle. Partial resection of the biceps femoris muscle including a mass and ipsilateral popliteal lymphadenectomy were performed. The pathohistological diagnosis was MCT with incomplete surgical margin and which were detected for mutations in exons 9 of the c-kit gene. On day 8 after surgery, the dog underwent revision surgery as removal of wider area surrounding the original site, but tumor cells were not detected histologically in the re-excised tissues. No recurrence or metastasis was observed until death on 692 days after first surgery. This case indicate that partial resection of the muscle may be a treatment option for intramuscular MCT.

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© 2020 Japanese Society of Veterinary Anesthesia and Surgery
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