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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Some consider the term to encompass a large group of conditions involving the appendix, pancreas, or ovaries, with diverse morphological features and pathogenesis. Surgical treatment of appendiceal mucocele. Support Center Support Center.

Mucocele of the appendix

However, although it is technically possible to remove ap;endiceal intact appendix with free resection margins with laparoscopy, the advantage of open surgery is the release and exteriorization of the cecum, avoiding the contamination of the cavity in case of accidental rupture of the appendix. However, we do not have data on small mucoceles left in situ and observed. Surgical procedures performed are reported in Table 3. Imaging tests can suggest the diagnosis. Colonoscopic diagnosis of mucocele of the appendix.

Mucocele of the Appendix: Case Report and Review of Literature

If the incidence of ovarian and uterine neoplasms might be, in part, explained by the high number of gynecologic procedures in our series, the association between appendiceal mucocele and colonic neoplasm is more clear and confirms reports by others. It has a 0. Guidelines for colonoscopy surveillance after polipectomy: The patient underwent abdominal computed tomography scan which revealed a cystic lesion in the right iliac fossa measuring 8.

This is very important because it can lead to pseudomyxoma peritonei, characterized by peritoneal dissemination with high morbidity and mortality rate [ 9 ].

Case 11 Case Copyright by the International College of Surgeons. A clinicopathologic analysis of cases with emphasis on distinghishing pathologic features, site of origin, prognosis, and relationship to pseudomyxoma peritonei. Three months after the operation, all symptoms had completely resolved and the patient was doing well. Treatment is always surgery and determined by the organ’s integrity, the dimensions of the base and histological type of the lesion.


In fact, even at the Mayo Clinic, with its legacy of large series of rare lesions, it took 24 years to compile this group of patients: Appendix mucocele may come as a consequence of obstructive or inflammatory processes, cystadenomas or cystadenocarcinomas 7. These included 2 patients with prostate cancer, 2 with gastrointestinal carcinoids to the terminal ileum and appendix, respectivelyand 1 with cecal adenocarcinoma.

This disease does not have a typical clinical picture. Abdom Imaging ;23 3: The authors mentioned pseudomyxoma and treatment of that entity, and specifically mentioned debulking procedures. In conclusion, appendiceal mucocele is a rare disease and has a clinical picture that resembles acute appendicitis.

Clinical Departments Imaging Modalities.

Rev bras Coloproct ;28 1: Mucocele of the appendix: The CT findings were compatible with a mucocele of the appendix, and a laparoscopic appendectomy was performed. Six lymph nodes discovered in the mesentery of the specimen revealed no pathological morphology.

The clinical presentation is rather unspecific. We, too, are somewhat dumbfounded by the lack of accurate diagnostic capability of any of the studies that were done, particularly CT scan, and I don’t have any explanation for that. A contrast-enhanced computed tomography CT study of the abdomen and pelvis revealed the stomach, small bowel, and colon to be fluid filled.

The mucocele of the appendix is a descriptive and unspecific term to define the cystic dilation of the appendix caused by the accumulation of mucus secretion. Imaging of mucocoele of the appendix with emphasis on the CT findings: The most dreaded complication of benign or malignant mucocele is pseudomyxoma peritonei, which is difficult to treat surgically or medically. If mucocele is treated incorrectly pseudomyxoma peritonei, which is characterized by malignant process, may develop.

Subscribe to Table of Contents Alerts. CT diagnosis of mucocele of the appendix in patients with acute appendicitis.

The initial operation should include appendectomy with en-block resection of the appendicular mucoceele fat and any fluid or mucus must be recovered for cytologic examination [ 736 ]. Fine aappendiceal aspiration should be avoided to preserve the integrity of the cyst [ 27 ].


The degree of internal echogenicity varies with mucin viscosity. Pseudomyxoma peritonei is a very nonspecific term, and you know there are all sorts of variations of presentation in that category.

There are no unique imaging characteristics to distinguish between the three groups of mucocele. At the time of surgery, a spontaneous appendiceal perforation or any mucus extravasation that emanates from the appendiceal lumen is strongly suggestive of malignancy and should prompt an oncologically sound procedure. Dr Stocchi and his colleagues have conducted a retrospective chart review to evaluate the clinical behavior of a fairly uncommon lesion, primary appendiceal mucocele.

Hyperthermia intensifies the cytotoxic effects of chemotherapy and increases the effect of the drug in the tissues.

Mucocele of the Appendix: Case Report and Review of Literature

Although the authors stated that there is a logical progression from cystadenoma to cystadenocarcinoma, do the authors think that the presence of a simple mucocele is perhaps the precursor to cystadenoma; in other words, are they all related? The ultrasound shows an encapsulated cystic lesion in the lower quadrant of the abdomen with a liquid content of variable echogenicity, according to xppendiceal density of the mucus Pathological examination of the surgical specimen revealed a fluid-filled, distended appendix measuring 8 cm at its greatest diameter and with a base 4 cm in diameter Figure 2.

Mean follow-up was more than 6 years. Purchase access Subscribe to the journal. Pseudomyxoma peritonei at appenndiceal time of surgery was highly significantly associated with malignancy. This conduct is different from the primary colon cancer with peritoneal carcinomatosis, in which the results are better when the definite conduct is performed at the initial surgery Log in Sign up.