Which macroscopic findings are characteristic of pleural synovial sarcoma?

Updated: Dec 25, 2019
  • Author: Joseph F Tomashefski, Jr, MD; more...
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Synovial sarcoma usually presents macroscopically as a circumscribed large tumor, sometimes with a fibrous pseudocapsule, having a mean diameter of 13 cm (range, 4-21 cm). The cut surface is gray-tan, often with necrotic friable components, hemorrhage, and focal cystic degeneration. Some tumors are attached to the pleura by a pedicle. [3, 8, 37] Rarely, synovial sarcoma can diffusely involve the pleura in a pattern that mimics diffuse malignant mesothelioma. [54]

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