PMC7393439_01
CT abdomen/pelvis revealing a 33 x 27 x 15 cm, predominant fatty mass with multiple septa and a few areas of soft tissue density. The mass displaces most of the abdominal contents posteriorly. A loop of small bowel is seen within thin the mass. No evidence of obstruction noted as oral contrast reached the sigmoid colon. (A) Coronal (B) Sagittal (C) Axial views.
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F1
He was then sent for a CT of the abdomen and pelvis, which again noted an abdominal mass 27 x 33 x 15 cm in size that displaced the majority of his abdominal contents posteriorly and that appeared to be mesenteric in origin (Figure 1).
Images of the gross specimen. (A) mesenteric lipoma in situ. (B) The lipoma was connected to a single pedicle of mesentery accompanied by a loop of small bowel entering through the mass. (C) Gross specimen after resection with one loop of small bowel (black arrow).
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F2
On exploration, the mass was tan-yellow in color, firm with a rubbery consistency, involved a segment of small bowel, and was connected via a single vascular pedicle (Figure 2).
Mature lobulated adipose tissue, hematoxylin and eosin stain under 40X magnification (A) and 200X magnification (B).
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F3
Morphologically, the lesion was composed entirely of mature lobulated adipose tissue, with delicate fibrous bands surrounding the lobules, without any immature component (Figure 3).