TABLE 2.

Radiological features of the reported cases of inflammatory myofibroblastic tumor of the mesentery.

References #	Age/Gender	Radiology findings	Preoperative diagnosis	Location
Our case	61 years/male	US: showed well defined hypoechoic solid abdominal mass. CT scan: showed large well defined opacity at mesentery on the left side of upper abdomen surrounded by small and large bowel loops with no enlarged mesenteric or retroperitoneal lymph nodes could be due to desmoid tumor or GIST.	Solid mesenteric mass.	Mesentery of jejunum.
(5)	11 months/female.	US: irregular heterogeneous, hypoechoic mass with vascularity. It was in the right region of abdomen, leaning on the liver superiorly and displacing right kidney posteriorly. Also, it was pushing the bowel loops to the left side. CT scan: Irregular hypodense mesenteric mass with mild heterogeneous post contrast enhancement.	Mesenteric mass.	Mesentery of small bowel.
(6)	63 years/male	CT scan: Heterogeneous mass in mesentery with central necrosis without bowel involvement nor lymph nodes. CXR: no lesion.	Intra-abdominal tumor.	Mesentery of proximal jejunum.
(8)	7 years/male.	Plain abdominal x-ray: signs that suggest small bowel intussusception. US: target sign in small bowel and signs of appendicitis.	Intestinal intussusception and appendicitis.	Mesentery of ileum.
(18)	59 years/male.	US: Homogeneous hypoechoic mass. CT scan: well-delineated intraperitoneal tumor. It had homogenous texture and a peripheral hypodensity, that suggested peripheral necrosis.	Differential diagnosis: sarcoma, adenocarcinoma, lymphoma, gastro-intestinal stromal tumor, desmoid, carcinoid tumor.	Mesentery of jejunum.
(19)	57 years/ male	CT scan: single, round, and huge mass with heterogeneous density. Calcified and thick wall. It compresses intestinal loops, the uncinate process of pancreas, and part of duodenum.	Gastrointestinal stromal tumor.	Transverse mesocolon.
(20)	10 months/male	CT scan: showed large heterogeneously enhancing mass in the mesentery.	IMT. Diagnostic by fine needle aspiration cytology (FNAC).	Mesentery of small bowel.
(21)	3 years/female	US: fluid in right hemiabdomen and debris.	Perforated appendicitis.	Mesentery of jejunum.
	20 months/male	US: complex fluid in abdomen, edematous mesentery, and thickened loops of bowel.	Perforated appendicitis.	Small bowel mesentery.
(22)	7 months/male	ND.	ND.	Mesentery of small bowel and omentum.
(23)	5 months/female	US: heterogeneous echogenicity of the mass.	Intestinal obstruction.	Mesentery of ileum. 25 cm from the ileocecal junction.
	1 year/male	ND.	Intestinal obstruction.	Mesentery of ileum.
(24)	4 months/male.	CT scan: showed a large nodular mass in the mesenteric region, displacing bowel loops anteriorly and kidneys and aorta posteriorly. Multiple regions had deposits like perineum and scrotum, omentum, liver, perisplenic region, paracolic gutter, pelvis, and on spermatic cords. The tumor showed fibrotic contents centrally. All these findings indicated metastasis of IMT.	Hemangioma and fibromatosis.	Mesentery of colon.
(25)	28 years/female.	US: 6 cm hypoechoic mass with sharp margins. CT scan: 73*61 mm inhomogeneous round tumor with sharp margins with hypodense fatty components in combination with enhancing soft tissues. PET scan: reactive paratracheal lymph nodes.	Differential diagnosis: IMT, liposarcoma, and teratoma.	Small bowel mesentery.
(26)	34 years/male	CT scan: 4.1*5.1*4.5 cm isodense mesenteric mass caudal to the transverse duodenum and anterior to inferior vena cava. With adjacent lymphadenopathy and enlarged right iliac lymph nodes. Inflammatory changes extend into the mesentery of the right colon.	Mesenteric mass.	Mesentery of small bowel.
(27)	37 years/male.	CT scan and US: solid mass in the right side of the abdomen.	Malignant mass.	Mesentery of ileo-jejunal junction.
(28)	67 years/ male.	CT scan of abdomen and pelvis: hypodense, inflamed and tubular-shaped structure in the distal small bowel mesentery associated with free fluid.	Meckel’s diverticulitis.	Mesentery of ileum.
(29)	19 years/female	US: 19*17*11 cm solid mass in pelvic cavity and medium amounts of ascitic fluid.	Solid mass.	Mesentery of terminal ileum.
	39 years/male	CT scan: 15*10*8 cm heterogeneous-density lesion in the left pelvic cavity.	ND.	Mesangial region of sigmoid and rectum. “Sigmoid mesocolon.”
(33)	32 years/ male	CT scan and US: Findings indicate portal vein thrombosis. hypoechoic mass in the mesentery. Angiography: absence of portal trunk and presence of collateral vessels.	Portal vein thrombosis associated with cavernomatous transformation.	Mesentery of jejunum.
(34)	7 years/female.	US: showed 10*8*6 cm mass in the right side of abdomen with calcification and vascularity. CT scan: 8.8 × 7.2 × 5.4 cm ill-defined mass, heterogenous, enhancing lesion, mostly neoplastic, arising from mesentery and covering the small bowel.	IMT	Mesentery of ileum.
(35)	5 years/male	US: a mass sized 8*10 cm in the abdominal cavity. It extended from below the pancreas to the pelvic cavity. Inside the mass was a calcified tissue with vascularity.	Differential diagnosis of myofibroblastic tumor and neuroblastoma.	Mesentery of ileum.
(36)	35 years/female	CT scan: soft tissue lesion, heterogenous, attenuating enhancement at right abdomen, and the small bowel was pushed to the left side. Small bowel contrast studies: no mass arises from the small bowel and it was deviated to the left side. These findings reinforce the CT findings of external compression of small bowel by a tumor in the right side.	Gastrointestinal stromal tumor.	Transverse mesocolon and omentum.
(37)	13 years/female	US: hyperechoic mass located in the right lower side of abdomen. CT scan: mass originated from the terminal ileum and dilatation in the proximal intestinal loops.	Burkitt lymphoma.	Mesentery of the ileocecal region.
	15 years/male	US and CT scan: revealed a mass originating from the terminal ileum mesentery.	Lymphoma	Ileocecal mesentery.
(38)	14 months/female	US: partially lobulated hypoechoic mass in umbilical region. CT scan: 10*10 cm solid mass but with unclear origin.	Solid mass.	Mesentery of duodenojejunal junction.
(30)	14 years/female	CT scan: Hypodense, well-delineated retroperitoneal tumor surrounding the superior mesenteric vessels, with enlargement of surrounding lymph nodes.	Unconfirmed.	Mesentery of small bowel.
(31)	28 years/female	CT scan: well-marginated, heterogeneous mass in the small bowel mesentery. It was close to superior mesenteric artery and jejunal branches. Center of the mass has low attenuation. MRI: T1 and T2 signal showed decreased intensity in the center of the mass which interpreted the presence of internal blood products or fibrous tissues.	Differential diagnosis of desmoid tumor and gastro-intestinal stromal tumor.	Mesentery of small bowel.
(32)	8 years/male	US: mixed echogenicity mass and well circumscribed in right upper abdomen. In the next day the mass was in the left upper abdomen. Gallium scan: revealed the mass in the right upper side. CT: revealed the mass in the upper right.	Lymphoma	Transverse mesocolon.
(39)	67 years/female	US: well-defined lobulated solid hypoechoic mass with internal vascularity. CT scan: well-defined, hyperdense mass with hypodense areas. Enhancing lesions.	Malignant gastro-intestinal stromal tumor.	Transverse mesocolon.
(40)	28 years/female	CT scan: 8 cm pelvic mass, non-calcified and showed well-defined margins. Before injection of contrast, it showed homogeneous attenuation, after it showed peripheral enhancement. The center is hypo attenuated. MRI: with gadolinium showed peripheral intense enhancement while the center had fibrotic components and was hypo vascular.	ND.	Mesentery of the terminal ileum.
(41)	38 years/female	CT scan: huge abdominal soft tissue mass with hypodense foci of degeneration. It was displacing adjacent jejunal loops laterally and encasing vessels.	Desmoid tumor.	Mesentery of proximal jejunum.
(42)	4 months/female	CT scan: large abdominal hypodense mass displacing the bowel. No clear tumor invasion.	Mesenteric cyst or teratoma.	Mesentery of ileum.
(43)	35 years/female.	CT scan: well-defined 8.2 cm mass with heterogeneous intense enhancement in the right lower quadrant.	ND.	Mesentery of colon.
(44)	4 months/male	CT scan: cyst-like mass attached to the small intestine in the right abdomen, below the liver, and anterior to the kidneys.	ND.	Mesentery of ileum.
(45)	34 years/female	X-ray: dilated small bowel loops with fluid level.	Intestinal obstruction.	Mesentery of ileoceum.
(46)	73 years/female	CT scan: Heterogenous enhancing and ill-defined mass, measuring 12*9*11 cm. Also, there are multiple non-enhancing lesions and small central intralesional calcifications. No metastasis.	Epithelioid variant of an IMT.	The mesentery of the small bowel.
(47)	9 years/female.	CT scan: 9 cm mass characterized by homogenous pattern, no calcification notes. US: a lobulated, solid mass measures 9 cm and contains some necrotic areas.	ND	The mesentery of the distal ileum.
	7 years/female.	Urogram: 7 cm mass, calcified and in homogenous mass, located supravesically and obstructing the uterus.	Histiocytoma.	Small bowel mesentery, with attachment to the segment of mid-small bowel, rectosigmoid, posterior wall of uterus, right broad ligament, and dome of bladder.
	5 years/male	Pelvic x-ray: 1 cm midline pelvic mass, that is calcified at some areas.	ND.	Mesentery of distal ileum.
(48)	2 years/male	CT scan abdomen: A mass located in RLQ takes the place of the ascending colon.	ND.	Mesentery of small intestine.