case_images: PMC2648644_01
case_images: Computed tomograms of the abdomen show a heterogeneous and ill-defined tumor 
  in the abdominal
  wall.
case_images: JO2008-478325.001.jpg
case_images: PMC2648644_01_JO2008-478325.001.jpg
case_images: fig1
case_images: Abdominal and pelvic ultrasounds followed by computed tomography showed a heterogeneous intramuscular mass of 8.5 cm diameter without local extension (Figure  1).
case_images: Tubulocystic and
  papillary pattern (hematoxylin
  eosin, original magnification x200).
case_images: JO2008-478325.002.jpg
case_images: PMC2648644_01_JO2008-478325.002.jpg
case_images: fig2
case_images: Surgical margins were positive.  Microscopically, the tumor showed a predominant papillary and tubulocystic growth pattern (Figure 2).
case_images: Tumor
  cells with hobnail configuration (hematoxylin eosin, original magnification x400).
case_images: JO2008-478325.003.jpg
case_images: PMC2648644_01_JO2008-478325.003.jpg
case_images: fig3
case_images: The tumor cells were round or polygonal most with hobnail configuration (Figure 3).
case_images: Endometrial gland invaded by tumor cells (hematoxylin eosin, original magnification
  x400).
case_images: JO2008-478325.004.jpg
case_images: PMC2648644_01_JO2008-478325.004.jpg
case_images: fig4
case_images: Benign endometriotic foci were observed in the proximity of the tumor (Figure 4).