PMC3226358_01
Abdominal CT showing a peripheral lipomatous lesion in left lateral sector.
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Ultrasonography and abdominal CT (Figure 1) revealed an adipose-looking lesion of around 4 cm located on the left lateral hepatic sector.
Trocar placement.
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Three trocars were placed: a 10 mm trocar in umbilical position for the 30  camera, a 5 mm trocar placed in the right hypochondrium, and another 10 mm trocar (operator's trocar) in the left hypochondrium (see Figure 2).
Intraoperative image of liver resection.
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A partial left sectionectomy was carried out, sealing the parenchyma with Ligasure 5 mm (Figure 3).
Typical HMB45 staining of liver angiomyolipoma.
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AE1-AE3, and CD117 but positive for S-100 with reference to the adipose tissue; HMB45 was positive within the cytoplasm of spindle-shaped and epithelioid cells and also for actin and desmin in the vascular component of the thick wall (Figure 4), so the final diagnosis confirmed a benign mixed angiomyolipoma. Any atypical cell was seen in every component of AML and p53 was negative.