CT of Recurrent Retroperitoneal Sarcomas
Ashok K. Gupta1,
Richard H. Cohan1,
Isaac R. Francis1,
Vernon K. Sondak2 and
Melvyn Korobkin1
1
Department of Radiology B1D502G, University of Michigan Hospitals, 1500
Medical Center Dr., Ann Arbor, MI 48109-0030.
2
Department of Surgery, University of Michigan Hospitals, Ann Arbor, MI
48109-0030.
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Fig. 1. —Bar graph shows interval between initial tumor resection and
recurrence.
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Fig. 2. —Bar graph compares interval between initial tumor resection and
recurrence for grade I tumors with grade III tumors.
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Fig. 3. —68-year-old man with local recurrence of liposarcoma. This patient
underwent complete resection 6 years earlier. CT scan shows large
heterogeneous mass (arrow) associated with right psoas muscle. Mass
contains components that have similar attenuation to retroperitoneal and
subcutaneous fat.
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Fig. 4. —55-year-old woman with intraabdominal recurrence of leiomyosarcoma.
Contrast-enhanced CT scan obtained 10 months after complete resection shows
two mesenteric tumor implants (arrows). Neither mass is near location
of originally resected tumor (in right lower quadrant).
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Fig. 5A. —68-year-old man with small abdominal recurrence of liposarcoma 26
months after complete resection. Initial CT scan reveals large heterogeneous
right retroperitoneal mass (arrows) containing areas of soft-tissue
and fat attenuation.
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Fig. 5B. —68-year-old man with small abdominal recurrence of liposarcoma 26
months after complete resection. CT scan obtained 26 months after complete
resection shows small recurrence of soft-tissue attenuation
(arrow).
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Fig. 6A. —61-year-old man with large abdominal recurrence of liposarcoma 18
months after complete resection. CT scan reveals large heterogeneous mass
containing areas of soft-tissue and fat attenuation. Despite large size of
tumor, subsequent resection was believed to be complete.
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Fig. 6B. —61-year-old man with large abdominal recurrence of liposarcoma 18
months after complete resection. CT scan obtained 18 months after complete
resection shows large recurrent tumor (arrow) in left lower quadrant.
Tumor is entirely composed of soft-tissue attenuation.
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Fig. 7. —76-year-old man with small local recurrence of liposarcoma 12 months
after complete resection. CT scan reveals strands of soft-tissue attenuation
traversing small recurrence (arrows) composed of predominantly fatty
attenuation immediately posterior to right colon.
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Fig. 8A. —48-year-old woman with small local recurrence of liposarcoma 13
months after complete resection. Initial CT scan through upper abdomen shows
two surgical clips along posterior aspect of inferior vena cava. Fat in right
renal fossa has homogeneous attenuation.
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Fig. 8B. —48-year-old woman with small local recurrence of liposarcoma 13
months after complete resection. CT scan obtained 13 months after A
reveals triangular-shaped recurrence (arrows) as area of slightly
increased attenuation in normal right retroperitoneal fat.
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Fig. 9. —22-year-old man with large abdominal recurrence of leiomyosarcoma 9
months after complete resection. Homogeneous infiltrative tumor
(arrows) encases abdominal aorta and inferior vena cava.
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Copyright © 2000 by the American Roentgen Ray Society.
