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An abdominal muscular fold mimicking tumour

ÖZTOPRAK, MD B ÖZTOPRAK, MD C GÜMÜ, MD H ELMEZ, MD and M F ERKOÇ, MD

Cumhuriyet University Faculty of Medicine, Department of Radiology, 58140 Sivas, Turkey

View larger version (114K): [in this window] [in a new window]   Figure 1. Contrast-enhanced multidetector CT image shows a lobulated mass continuous with the internal oblique abdominal muscle. The mass is isodense with the musculature. The fat planes between the three layers of anterolateral abdominal muscle are not obscured. The transverse abdominal muscle is deplaced medially. An indentation on the inferior aspect of the right lobe of the liver is also noted. No sign of intra-abdominal extension or infiltration is present.

View larger version (128K): [in this window] [in a new window]   Figure 2. Pre-procedure unenhanced CT image at the level of the renal veins, obtained with the patient in a left lateral oblique position, does not reveal any mass. All three layers of anterolateral abdominal muscle appear normal. Note the indentation on the liver has also disappeared.

View larger version (119K): [in this window] [in a new window]   Figure 3. Repeated unenhanced CT image obtained in the supine position at the same level shows recurrence of the mass-like lesion, although not exactly in the same configuration as in Figure 1.