Mesenteric heterotopic pancreas in a pediatric patient: A case report and review of literature

Table 1 List of cases of mesenteric heterotopic pancreas in medical literature

Ref.	Age (yr)	Sex	Clinical manifestation	Location	Imaging features	Operation
[6]	15	F	Right upper quadrant pain; Diffuse abdominal tenderness, most pronounced in the right upper quadrant and nonspecific guarding	Jejunal mesentery	CECT: A 3.3 cm × 2.3 cm soft tissue mass in the mesentery, with morphology and homogeneous enhancement characteristics similar to the pancreas	A 3 cm mass in the jejunal mesentery, adjacent to the transverse colon and omentum
						The mass and the adjacent small bowel were resected
[7]	12	M	Periumbilical abdominal pain, nausea and vomiting; Temperature of 100 °F	Jejunal mesentery	No imaging examination	A purulent node (1.5 cm × 1 cm × 0.7 cm) with fibrinous exudate at the base of the midjejunal mesentary
			A rigid abdomen with absence of bowel sounds			This node was excised
[8]	57	F	Pain in the right side of the back, nausea, a similar episode of pain approximately 1 mo before Mild, generalized abdominal tenderness and nonspecific guarding	Small bowel mesentery	CECT: A 3.7 cm × 1.7 cm soft tissue mass in the mesentery, enhancement similar to the pancreas	Treated conservatively
					MRCP: A duct within the mesenteric mass, draining into the fourth portion of the duodenum
[9]	15	F	Abdominal pain of recent onset and abdominal distention of several years of duration	Mesocolon	CT: A hypodense, intraperitoneal, circumscribed mass dislocating the spleen and left kidney	A spherical, encapsulated tumor mass (210 mm in the largest diameter) in the mesocolon Resection of the mass with a segment of transverse colon
			A large tumor filling the left hypochondrium
[10]	75	F	Acute periumbilical pain, nausea and vomiting	Jejunal mesentery	US: Cholelithiasis and gallbladder wall thickening	An inflammatory mass in the mesentery, 15 cm × 8 cm × 5 cm
			Acute abdomen with peritoneal irritation findings		US before the surgery: An abdominal tumoral mass, pseudokidney image, originating from the intestine or mesentery	A great portion of the inflammatory mass was excised, and cholecystectomy
[11]	38	M	One episode of syncope, 2-d history of melena	Jejunal mesentery	CECT: An elongated soft tissue mass in the jejunal mesentery, attenuation similar to orthotopic pancreas and extended to the periduodenal fat plane	A soft-tissue mass 20 cm in diameter in the jejunal mesentery, infiltrating the adjacent jejunal wall
			The heart rate was 96 beats/min; no abdominal tenderness			The lesion was excised with part of the adjacent jejunum
[12]	67	F	Postprandial epigastric stabbing pain, nausea and vomiting. Similar episodes had recurred over the past 30 yr	Jejunal mesentery	CECT: A mass in the mesentery. A small ductal structure in the mass, communicating with the adjacent jejunal loop MRCP: A mass in the mesentery isointense to the native pancreas, with a small duct draining into a proximal jejunal loop	A mass (6.5 cm × 2.5 cm × 1.6 cm indurated teardrop-shaped) mass in the jejunal mesentery
			Past medical history: A laparoscopic cholecystectomy; Tenderness of epigastrium			The mass with the overlying adherent jejunum was resected
This study	12	F	Intermittent vomiting and abdominal pain	Jejunal mesentery	US: A well-defined, heterogeneous, medially echoic, 4.9 cm × 2.6 cm mass at the margin of the mesentery	A yellowish, soft-tissue mass 4 cm in diameter in the mesentery, adhered to the serosa of the jejunum
			Abdominal tenderness with peritoneal irritation
					CECT: An enhanced oval, soft tissue mass (42 cm × 25 mm) in the mesentery	The mass and the adjacent small bowel were resected

CECT: Contrast-enhanced computed tomography; CT: Computed tomography; MRCP: Magnetic resonance cholangiopancreatography; US: Ultrasonography.