A Huge Mesenteric Chylous Cyst, Presenting as Abdominal Mass: A Rare Case Report.

Mesenteric cysts are rare abdominal lesions. A mesenteric chylous cyst is a very rare type of mesenteric cyst that may occur anywhere through the bowel, from the duodenum to the rectum. The etiology of mesenteric cysts is unknown and several theories have been suggested for forming these cysts. A mesenteric cyst is mostly found incidentally during investigations for another pathology. The treatment of choice for mesenteric chylous cysts in symptomatic patients is complete excision (enucleation) by either laparoscopic or open technique. The prognosis of a completely excised mesenteric cyst is generally good and its malignant transformation is reported to be around 3%. We present a case of mesenteric chylous cyst in a 60-year-old female presented with abdominal pain, constipation, nausea, and vomiting, who underwent laparotomy and complete cyst excision rate. The purpose of this case report is to consider mesenteric chylous cyst in the differential diagnosis of all abdominal masses.