PMC8434899_01
The computed tomography revealed a 5.6 cm x 3.5 cm hypodense soft-tissue mass in the antrum of the stomach (white arrows).
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fig1
A computed tomography (CT) examination was performed which revealed a hypodense and well-defined soft-tissue mass (5.5 x 3.5 cm) in the antrum of the stomach (Figure 1).
(a) An adipocytic tumor was observed. The tumor cells showed appreciable anisocytosis and focal anisonucleosis without obvious pleomorphism. H + E, initial magnification 100x. (b) There were rare, sporadic cells with the morphologic appearance of a lipoblast. H + E, initial magnification 400x. (c) Several of the atypical adipocytes and lipoblasts showed immunoreactivity with p16 on immunohistochemistry, initial magnification 400x.
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fig2
The second tumor in the antrum (d = 55 mm, R0) was a well-differentiated liposarcoma (Figure 2), positive for p16 immunohistochemistry.
PMC8434899_02