Successful resection of a huge retroperitoneal venous hemangioma: A case report

Table 1 Clinical characteristics of included literature

Ref.	Age	Sex	Complaints	Location	Treatment	Pathological types	Outcome
Powis and Rushton[18]	26	F	Abdominal swelling	Right abdomen	Total resection	Venous hemangioma	Uneventful
Igarashi and Hanazaki[6]	28	M	Hemangioma recurrence	Left lumbar	Total resection	Venous hemangioma	Uneventful
Martín-Fernández et al[5]	39	NM	Heartburn and abdominal pain	Right abdomen	Total resection	Venous hemangioma	Uneventful
Pérez Martín et al[4]	26	F	Dyspepsia and back pain	Left lumbar	Laparoscopy	Venous hemangioma	Uneventful
Tseng et al[19]	61	F	NM	Retroperitoneum	Subtotal resection	Venous hemangioma	Smaller residual
Forbes[11]	75	M	Abdominal and back pain	Left retroperitoneum	Laparotomy	Cavernous hemangioma	Uneventful
Choi and Oh[14]	29	F	Incidentally found	Right abdomen	Laparoscopy	Cavernous hemangioma	Uneventful
Kobayashi et al[13]	54	M	Left flank pain	Left Retroperitoneum	Laparoscopy	Venous hemangioma	Recurrence
He et al[7]	38	M	Dull epigastralgia	Right upper quadrant	Laparotomy	Cavernous hemangioma	Uneventful
Nakatsuka et al[8]	65	F	Abdominal fullnes	Right side of uterine	Total resection	Venous malformation	Uneventful
Hanaoka et al[10]	36	M	Right upper quadrant pain	Right retroperitoneum	Laparotomy	Cavernous hemangioma	Uneventful
Amati et al[20]	20	F	Abdominal distention and pain	Retroperitoneum	Laparotomy	Malformation	Uneventful
Chen et al[9]	46	F	Right waist pain	Near renal pelvis	Laparoscopy	Cavernous hemangioma	Uneventful
Laih et al[3]	57	F	Incidentally found	Right retroperitoneum	Laparotomy	Cavernous hemangiomas	Uneventful

NM: Not mentioned; F: Female; M: Male.

Table 2 Imaging features of included literature

Ref.	Age	Sex	Location	Imaging studies
Powis and Rushton[18]	26	F	Right abdomen	Intravenous pyelography show a soft-tissue mass compressing and displacing the ureter
Igarashi and Hanazaki[6]	28	M	Left lumbar	CT show a papillary structured mass in the left peritoneum, and slight enhancement in the late phase of the enhanced CT. Ultrasonography show a hyperechoic mass lesion
Martín-Fernández[5]	39	NM	Right abdomen	Ultrasonography and CT show a solid-cystic mass with septations
Pérez Martín[4]	26	F	Left lumbar	Ultrasonography and CT show a retroperitoneal solid cystic polylobulated mass
Tseng et al[19]	61	F	Retroperitoneum	Ultrasonography and CT show heterogeneous mass
Forbes[11]	75	M	Left retroperitoneum	CT show left-sided retroperitoneal hemorrhage
Choi and Oh[14]	29	F	Right abdomen	Ultrasonography show a hypoechogenic mass, and CT show irregular shaped mass with internal multiple small calcifications (phleboliths)
Kobayashi et al[13]	54	M	Left Retroperitoneum	CT show a cystic mass with the thickened wall having a contrast enhancement
He et al[7]	38	M	Right upper quadrant	Ultrasonography showed a giant cystic mass, and CT show a low density mass with mild enhancement
Nakatsuka et al[8]	65	F	Right side of uterine	MRI show a cystic with high intensity on the T2-weighted image
Hanaoka et al[10]	36	M	Right retroperitoneum	CT show a tumor without marked contrast enhancement, MRI show the tumor with low intensity on the T1-weighted image and high intensity on the T2-weighted image
Amati et al[20]	20	F	retroperitoneum	CT show a low density mass with regular borders and contrast-enhanced septation
Chen et al[9]	46	F	Near renal pelvis	CT show an ill-defined soft tissue mass with unevenly enhanced and with calcified margins. MRI show significant and continuous uneven mass, limited diffusion weighted imaging (DWI), and high signal intensity on apparent diffusion coefficient (ADC) map
Laih et al[3]	57	F	Right retroperitoneum	Ultrasonography show a heterogeneous hypoechoic lesion, and CT show heterogeneous enhancement over the right retroperitoneum

CT: Computed tomography; MRI: Magnetic resonance imaging; NM: Not mentioned; F: Female; M: Male.