Mushroom cap sign

Mushroom cap sign is one of the important signs of

[A] Hydatid cyst of Lungs
[B] Carcinoma of colon
[C] Rupture of Spleen
[D] Rectosigmoid endometriosis

Mushroom cap sign

  • Mushroom cap sign- important signs of deep rectosigmoid endometriosis
  • Seen on T2 weighted MRI sequence.
  • It indicates the submucosal involvement in the rectosigmoid colon.
  • The hypertrophic muscularis propria appears as heterogeneous low signal intensity surrounded by the high signal intensity of mucosa and submucosa. This gives the characteristic appearance of a mushroom cap.

Case courtesy of Gustavo Aguiar, From the case rID: 68037

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