Mucocele of the appendix is a term used to describe a dilated, mucin-filled appendix. It is most commonly the result of epithelial proliferation, but can be caused. Appendiceal mucoceles occur when there is an abnormal accumulation of mucin causing abnormal distention of the vermiform appendix due to various. Appendiceal Mucocele: A Diagnostic Dilemma in Differentiating Malignant From Benign Lesions With CT. Hao Wang1, Yong-Qi Chen2, Ran Wei1, Qing-Bing.

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During urgent appendectomy it is important to consider every mucocele as malignant in order to avoid iatrogenic perforation causing pseudomyxoma peritonei. Create a free personal account to make a comment, download free article PDFs, sign up for alerts and appdndiceal.

The remaining 82 patients underwent more complex procedures in addition to the excision of the mucocele, including various types of debulking procedures for pseudomyxoma peritonei, total abdominal hysterectomy and salpingo-oophorectomy, segmental colonic resections, and cholecystectomy for concurrent conditions. In cases of acute appendicitis there may be an overlap with acute appendicitis without mucocele, though features suggestive of a coexisting mucocele include well-circumscribed cystic dilatation with low attenuation, mural calcification, and a luminal diameter greater than 1.

However, AM are considered to occur more frequently in women [ 17 ]. The histological examination revealed a low-grade mucinous appendiceal neoplasm with negative regional lymph nodes and without presence of mucinous peritoneal carcinomatosis.


In young patients assuming an acute appendicitis, the preoperative diagnosis is rare. We subdivided the mucoceles histologically on the basis of the World Health Organization classification. According to modern classification, there are 4 histologic types: Appendiceal mucocele is a rare cause of acute abdomen.

Mucocele of the Appendix: Case Report and Review of Literature

Mucocele of the appendix. Mucinous adenocarcinomas don’t tend to metastasize to the lymph nodes or hematogenously.

Journal List Int Surg v. It is a rare disease. However, if it is an adenocarcinoma of the intestine, or if the lymph nodes are positive as to malignity at the frozen section, right colectomy is performed at the initial surgery.

Surgical Treatment of Appendiceal Mucocele

I believe that it will be a reference series that surgeons will use for years to come because of its size. National Center for Biotechnology InformationU. This may explain the high incidence of surgical diagnosis for other conditions although CT scanning was not available for a number of patients in that study. This surgery has low mortality rates, especially when elective and performed in patients at a good general state 21, The abdominal examination was normal except for focal tenderness over McBurney’s point without rebound tenderness on palpation.

In between these disparate entities lie the mucinous neoplasms with low and high rates of recurrence. Appebdiceal and intraperitoneal hyperthermic perfusion: Mean follow-up was more than 6 years. A Manual of Pathological Anatomy. Despite the specific endoscopic, ultrasonographic, and radiologic features described for appendiceal mucocele, 20 – 24 preoperative diagnosis was rare.


Diagnosis and Treatment of Mucinous Appendiceal Neoplasm Presented as Acute Appendicitis

Laparoscopic appendectomy for mucocele of the appendix. Dr Stocchi and his colleagues have conducted a retrospective chart review to evaluate the clinical behavior of a fairly uncommon lesion, primary appendiceal mucocele.

When imaged with CT, a mucocele of the appendix will typically manifest as homogenous hypoattenuating material that has Hounsfield values similar to water filling the lumen of the appendix. No further surgical therapy was required.

Dr Stocchi has done an excellent job with his presentation, and I have several questions. The aim of this study is to report a case of giant appendiceal mucocele presented as acute appendicitis, discussing the clinical and surgical approach in the emergency setting. The patient underwent elective laparoscopic-assisted right hemicolectomy.

Appendicitis at the millennium.

The most common symptoms in the remaining 65 patients are reported in Table 1. This is one of the most common surgical diseases.

There seems to be something of a field effect in these patients because of the high risk of associated malignancies, and this is the same information we found in the previous study with appendiceal adenocarcinoma—a very high rate of synchronous and metachronous carcinomas, not only of the GI tract, but of other organs.