Axial T2 TSEwi shows the three different layers of rectal wall: the inner hypointense and hyperintense layers respectively represent mucosa (M) and submucosa (SM), the hypointense inner and outer layers represent the muscolaris propria (MP) characterized by the inner circular muscle (CM) and the outer longitudinal muscle (LM); the external hyperintense layer represents perirectal fat tissue (P) while the internal the lumen (L).