Fig. 7
From: Endometriosis: clinical features, MR imaging findings and pathologic correlation
Deep infiltrating endometriosis in a 48-year-old woman. (a) Sagittal fat-suppressed T1-weighted image displays an endometriotic nodule (white arrows) infiltrating the muscular layer of the anterior rectal wall. Within the lesion hyperintense foci are detectable (white arrowheads), representing hemorrhagic content. (b) Photomicrograph (H&E 200×). Focus of endometriosis with marked haemorrhage. On (c) sagittal T2-weighted image the solid endometriotic lesion appears mainly hypointense (white arrows), with small hyperintense cystic foci inside representing dilated ectopic endometrial glands (white arrowheads)