Giant mucocele of the appendix: clinical and imaging findings in 3 cases

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
Giampiero FrancicaValerio Molese

Abstract

Clinical and imaging (sonographic and computed tomographic [CT]) findings in 3 cases of giant mucocele of the appendix are described. Clinical records of 3 cases of giant mucocele of the appendix were reviewed. All patients had a basal B-mode sonographic examination and a contrast-enhanced sonographic examination using a second-generation low-mechanical index contrast medium. In all cases, a dual-phase spiral CT examination was carried out. In 2 cases, the abdominal masses were discovered in asymptomatic patients; 1 patient had vague abdominal discomfort. A pathologic diagnosis of benign cystoadenoma was found at pathologic examination in all cases, and malignant pseudomyxoma peritonei was disclosed in 1 patient 1 year later. Common sonographic findings were as follows: (1) a huge abdominal mass with a maximum diameter ranging between 20 and 25 cm; (2) a thin hyperechoic border without either solid vegetations or signs of infiltration of surrounding tissues; (3) a complex internal echo structure with anechoic lacunae interspersed between curvilinear, wavy bands of echogenic material (the so-called sonographic onion skin sign); and (4) avascularity of the masses shown on contrast-enhanced sonography with a low-mechanical index m...Continue Reading

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Citations

May 17, 2007·Abdominal Imaging·Nicholas LangeJeremiah Long
Sep 17, 2008·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Ingo HonnefThomas Roeren
Jul 24, 2020·Journal of Gastrointestinal Cancer·Mustafa ŞentürkMehmet Tolga Kafadar
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Mar 23, 2011·Journal of Clinical Ultrasound : JCU·Vinod AttardeNamit Hattangadi
Oct 1, 2008·The Indian Journal of Surgery·Sanjay GuptaRavinder Kaur
May 8, 2014·Case Reports in Obstetrics and Gynecology·Elvira PaladinoAdalgisa Pietropolli
Nov 2, 2012·International Surgery·Zaza DemetrashviliVakhtang Qerqadze

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