Bilateral hamartomatous medullary lipoma within the nasal turbinate bones in a cynomolgus monkey (Macaca fascicularis)

A 15-year-old male cynomolgus monkey (Macaca fascicularis) showed large bilateral masses in the maxillary sinus. In histopathological examination, both masses revealed benign medullary lipomas within the turbinate bones. The tumors were composed of well-developed lipocytes, trabecular bones and a fe...

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Bibliographic Details
Published in:Journal of Veterinary Medical Science 2016, Vol.78(11), pp.1741-1743
Main Authors: KATSUTA, Osamu, SHIBATA, Toru, KURIKI-YAMAMOTO, Yumi, MOCHIZUKI, Takaharu, YOSHIMI, Miwa, NOTO, Takahisa, MANO, Hidetoshi
Format: Article
Language:English
Subjects:
Animals
Benign
Blood vessels
Bone
Bone Neoplasms - diagnosis
Bone Neoplasms - veterinary
Brain Stem Neoplasms - diagnosis
Brain Stem Neoplasms - veterinary
Diagnosis, Differential
hamartoma
Hamartoma - diagnosis
Hamartoma - veterinary
Lipoma
Lipoma - diagnosis
Macaca fascicularis
Male
Maxillary sinus
medullary lipoma
monkey
Monkey Diseases - diagnosis
nasal turbinate
Neoplasia
Nose
Pathology
Sinus
Tumors
Turbinates - pathology
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Summary:A 15-year-old male cynomolgus monkey (Macaca fascicularis) showed large bilateral masses in the maxillary sinus. In histopathological examination, both masses revealed benign medullary lipomas within the turbinate bones. The tumors were composed of well-developed lipocytes, trabecular bones and a few blood vessels. Although we initially diagnosed the tumor as bilateral lipomas in the nasal turbinates, it was not differentiated from lipomatous hamartoma. Findings, such as unique symmetrical proliferation, lack of border from the normal marrow and the intact surrounding tissue, indicated a lipomatous hamartoma/hamartomatous lipoma, thought to be a suitable diagnosis of the lesion. Of most interest was that such a proliferating lesion occurred in the nasal turbinate.
ISSN:0916-7250
1347-7439
DOI:10.1292/jvms.16-0286