PMC9720795_01
Computed tomography scan of right upper extremity revealing an 11.2 cm x 14.2
cm x 8.8 cm right shoulder mass with osseous erosion of the inferior right
scapula.
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Computed tomography (CT) imaging of the right upper extremity as depicted in Figure 1 revealed a large peripherally enhancing mass centered about the right shoulder measuring approximately 11.2 cm x 14.2 cm x 8.8 cm with osseous erosion of the inferior right scapula.
The low-power view shows a very cellular tumor (Hematoxylin & Eosin
stain, original magnification x200).
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The pathology results of the shoulder mass biopsy revealed a high-grade pleomorphic sarcoma with admixed giant cells, favoring an UPS, high-grade Federation Nationale des Centres de Lutte Contre Le Cancer (FNCLCC Grade 3 of 3) as depicted in Figures 2 and 3.
The high-power view shows malignant tumor cells with large and pleomorphic
nuclei, a moderate amount of cytoplasm, prominent nucleoli, and some mitotic
figures (arrow). Hematoxylin & Eosin stain, original magnification
x400.
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The pathology results of the shoulder mass biopsy revealed a high-grade pleomorphic sarcoma with admixed giant cells, favoring an UPS, high-grade Federation Nationale des Centres de Lutte Contre Le Cancer (FNCLCC Grade 3 of 3) as depicted in Figures 2 and 3.
The tumor contains several osteoblastic-like multinucleated giant cells
(arrows). Hematoxylin & Eosin stain, original magnification x400.
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Figure 4. Furthermore, tumor necrosis was identified.