Primary Gastrointestinal Stromal Tumors in the Omentum and Mesentery: CT Findings and Pathologic Correlations
Hyo-Cheol Kim1,
Jeong Min Lee1,
Se Hyung Kim1,
Kyoung Won Kim2,
Minjin Lee3,
Young Jun Kim1,
Joon Koo Han1 and
Byung Ihn Choi1
1 Department of Radiology, Seoul National University College of Medicine,
Institute of Radiation Medicine, SNUMRC, and Clinical Research Institute,
Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul 110-744,
Korea.
2 Department of Radiology, Asan Medical Center, University of Ulsan College of
Medicine, Seoul, Korea.
3 Department of Pathology, Seoul National University College of Medicine, Seoul
National University Hospital, Seoul, Korea.
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Fig. 1. —65-year-old man with lower abdominal pain. CT scan shows huge
well-circumscribed mass with extensive areas of low attenuation. Tumor
occurred in mesentery of small bowel, and most areas of low attenuation were
revealed as hemorrhage.
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Fig. 2A. —74-year-old woman with right lower abdominal pain. CT scan
shows bilobular mass with central areas of low attenuation and peripheral
enhancement.
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Fig. 2B. —74-year-old woman with right lower abdominal pain. Photograph
of cut surface of resected specimen shows solid tumor with multiple foci of
hemorrhage (small arrows) and cystic degeneration (large
arrow). Tumor occurred in omentum.
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Fig. 3A. —52-year-old man with abdominal distention. CT scan at level
of pancreas shows large well-circumscribed mass with extensive areas of low
attenuation. Tumor adjoins second portion of duodenum (D) and head of
pancreas. No engorged vessels are present around duodenum and pancreas.
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Fig. 3B. —52-year-old man with abdominal distention. CT scan caudal to
A shows engorged vein (arrow) that was tributary of superior
mesenteric vein.
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Fig. 3C. —52-year-old man with abdominal distention. Photograph of
resected bivalved specimen shows extensive areas of necrosis (N) and
peripheral white-and-yellow solid tumor (arrow). Tumor occurred in
transverse mesocolon.
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Fig. 4A. —61-year-old man with abdominal discomfort. CT scan shows huge
mass, small daughter nodule (arrow), and ascites.
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Fig. 4B. —61-year-old man with abdominal discomfort. Photograph of
resected specimen shows multiple foci of hemorrhage in tumor that is attached
to omentum. Note small metastatic nodule (arrow) in omentum.
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Copyright © 2004 by the American Roentgen Ray Society.
