1. Fat-forming solitary fibrous tumor of the sacrum: A case report and literature review
- Author
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Toshihiro Furuta, MD, PhD, Yudai Nakai, MD, PhD, Wataru Gonoi, MD, PhD, Ryo Kurokawa, MD, PhD, Naomasa Okimoto, MD, Naoya Sakamoto, MD, Haruyuki Fukuchi, MD, Hiroshi Kobayashi, MD, PhD, Naohiro Makise, MD, PhD, and Osamu Abe, MD, PhD
- Subjects
Solitary fibrous tumor ,Fat-forming ,Lipomatous ,Hemangiopericytoma ,Spine ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Fat-forming variant of solitary fibrous tumor (SFT) is a rare mesenchymal neoplasm. Here we report the case of a 33-year-old woman who developed pain and muscle weakness from the posterior aspect of the right hip to lower extremity. Imaging examinations revealed a mass with fatty components and hypervascular solid components filling the sacral spinal canal and sacral foramen. The sacral mass was resected and histological examination of the specimens revealed patternless proliferation of short spindle-shaped cells with staghorn blood vessels. A number of mature adipocyte-like cells were also observed. The tumor cells were positive for STAT6 and the nuclei of the adipocytes were also positive, which was diagnostic for fat-forming SFT.
- Published
- 2021
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