Mushroom cap sign in MRI is seen in:-: (A) IIeocaecal TB, (B) Pulmonary endometriosis, (C) Ovarian endometriosis, (D) Rectal endometriosis
Answer is D. Rectosigmoid endometriosis: - The endometrial deposit on rectum causes proliferation of muscularis propria and the surrounding tissues which is seen as "mushroom cap sign" in T2 weighted MRI.