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Abdomen » Appendix
Mucocele of the appendix
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Author(s) :
Chaitali Shah, FRCR
Presentation This is an incidental finding seen on ultrasound performed in this 58-year-old man with orthopedic trauma. The patient was asymptomatic as far as the pathology seen here is concerned.
Caption: High resolution ultrasound of the right lower quadrant
Description: The appendix is identified in the right lower quadrant. The walls of the appendix appear to be normal.
Caption: Sagittal scan of the right lower quadrant
Description: The tip of the appendix shows a focal dilatation and appears to be distended.
Caption: High resolution sagittal scan of the right lower quadrant
Description: A dilated tubular fluid appearing - distended tip of the appendix is seen in this image.
Caption: High resolution sagittal scan of the right lower quadrant
Description: The appendicular tip did not change shape when scanning with pressure and there was no probe tenderness elicited.
Caption: Transverse image of the RLQ
Description: The distended cystic appearing appendicular tip is seen here and demonstrates good posterior enhancement.
Caption: Sagittal color Doppler image
Description: No abnormal or increased vascularity is noted within the walls of the dilated tip of the appendix.
Differential Diagnosis Mucocele of the appendix, mucin producing appendicular tumor
Final Diagnosis Mucocele of the appendix
Follow Up A laparoscopic appendectomy was performed and on surgery a cystic dilatation of the tip of the appendix was seen. Pathology showed no signs of appendicitis.  
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