Authors
Bruno C Pimenta, Ticiana N França, Lucas F Dos Santos, Adriano S Araujo, Paula Dias Retamero, Vivian A Nogueira, Thiago S Costa
Published in
Topics in companion animal medicine. Pages 101085. Jul 14, 2026. Epub Jul 14, 2026.
Abstract
Desmoid tumors, also known as aggressive fibromatosis, are benign neoplastic proliferations with a high capacity for invasion into adjacent tissues and are incapable of promoting metastasis. Despite being rare, it is well described in medicine, whereas only isolated reports exist in veterinary medicine. Herein, we describe a case of primary aggressive fibromatosis affecting the cervical region of a young cat and associated with spinal cord compression and neurological signs. Magnetic resonance imaging revealed spinal cord compression and hypointensity on pulse sequences, which guided localization and facilitated excisional biopsy of the lesion. Histopathological examination suggested aggressive fibromatosis due to the benign proliferation of well-differentiated spindle-shaped mesenchymal cells with an abundant collagen matrix and invasion into the adjacent muscle tissue. After the surgical procedure and spinal cord decompression, the neurological symptoms improved. To date, no clinical signs of recurrence have been observed in this patient. The objective of this report was to describe a case of aggressive fibromatosis associated with neurological signs in a domestic cat, with an emphasis on clinical and diagnostic aspects, as this disease is rare and there is limited information in the veterinary literature regarding it.
PMID:
42448038
Bibliographic data and abstract were imported from PubMed on 15 Jul 2026.
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