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. 2021 Sep 1;41(5):1368–1386. doi: 10.1148/rg.2021200207

Figure 10a.

Foreign body in a 20-year-old man with an enlarging abdominal mass and a history of gunshot wound to the abdomen 7 years earlier. (a) Axial contrast-enhanced CT image shows a large complex thick-walled cystic structure (arrow) in the anterior abdomen. There are thin nonenhancing undulating internal septa (arrowhead) but no radiopaque marker. (b) Photograph of the gross resected specimen shows that the linear septa correlate with the folds of a surgical towel (arrowhead), encapsulated by a thick fibrous wall (arrow). (c) High-power photomicrograph (H-E stain) shows giant cells with invaginated (black arrowhead) and encased (white arrowhead) synthetic fibers.

Foreign body in a 20-year-old man with an enlarging abdominal mass and a history of gunshot wound to the abdomen 7 years earlier. (a) Axial contrast-enhanced CT image shows a large complex thick-walled cystic structure (arrow) in the anterior abdomen. There are thin nonenhancing undulating internal septa (arrowhead) but no radiopaque marker. (b) Photograph of the gross resected specimen shows that the linear septa correlate with the folds of a surgical towel (arrowhead), encapsulated by a thick fibrous wall (arrow). (c) High-power photomicrograph (H-E stain) shows giant cells with invaginated (black arrowhead) and encased (white arrowhead) synthetic fibers.