Figure 8.

LAMN with an atypical presentation. A: Ultrasound image shows a multilocular cystic tumour (arrow) in the right iliac fossa. B: Contrast-enhanced axial CT scan showing infiltration of the right iliac muscle (star) by a tumour, representing a ruptured mucocele of the appendix, in an extra-peritoneal location. Note the cluster of calcifications within the tumour (curved arrow) and the fact that the cortex of the iliac bone is intact. The right iliopsoas muscle was excised. In the surgical specimen, cystic areas filled with mucinous content were observed. The final histological diagnosis was a ruptured LAMN.