Pseudomyxoma extraperitonei: a rare presentation of a rare tumour

Pseudomyxoma extraperitonei is rare lesion resulting from the rupture of an appendiceal mucocele into the extraperitoneal tissues. We report a case of an 80-year-old woman with a medical history for a left hemicolectomy and a laparoscopic cholecystectomy 11 and 6 years, respectively, referred to our hospital for abdominal pain of increasing severity localised to the right hemiabdomen. The abdominal examination revealed a mobile mass a multidetector CT was performed; the patient was taken to surgery which was performed with no complications. Histopathological analysis of the tumour reported a pseudomyxoma associated to a moderately differentiated adenocarcinoma. The patient remains asymptomatic at a 1-year follow-up.