Infected mesenteric cyst.

Mesenteric cyst is a rare condition. Presentation with non-typhoid spontaneous infection in an unusual area makes it even more a rare situation with mesenteric cyst. Its diagnosis is mainly based on the imaging modalities. However, there are difficulties in diagnosis when it is present in an uncommon area and rare known complications. Mesenteric cyst can present with few uncommon emergency conditions which pose difficulties in diagnosis as well as treatment options as mentioned in this case.

Mesenteric cyst infected with non-typhoidal salmonella infection.

Although extra-intestinal non-typhoidal Salmonella infections are common in developing countries, infection of the mesenteric cyst with Salmonella enteritidis is an extremely rare occurrence. Review of the English literature has revealed one report up to this date. The case of a 4-year-old boy with a mesenteric cyst infected with Salmonella enteritidis is presented.

The rationale for surgical treatment of mesenteric and retroperitoneal cysts.

Mesenteric and retroperitoneal cysts are rare, usually asymptomatic lesions. Because of this, several recommendations in the literature caution against operative therapy in the absence of symptoms. During a recent 10 year period, six patients presented to our hospital with symptomatic mesenteric or retroperitoneal cysts; two of these patients were septic and had infection within the cyst. All six patients underwent excision with complete resolution of symptoms and no morbidity. With the advent of frequent abdominal CT scanning for a variety of reasons, it is likely that more of these lesions will be noted in the future. In view of the potential for development of symptoms and complications, we feel that any good risk patient found to harbor such a cyst should undergo complete excision.