Primary extra-pancreatic pancreatic-type acinar cell carcinoma in the right perinephric space: A case report and review of literature

Table 2 Computed tomography features in reported cases of acinar cell carcinoma arising from extra-pancreatic tissues

Ref.	Tumor shape	Tumor contour, well-/ill-defined	Tumor CT image, present/absent	Ulceration, yes/no	Necrosis, yes/no	Enhancement patterns	Capsule, present/absent	Adjacent organ	Metastasis
Bookman[10], 1932	NM	Well-defined	No	NM	NM	No	NM	NM	No
Makhlouf et al[14], 1999	NM	NM	Absent	Yes	NM	NM	NM	NM	No
Sun and Wasserman[5], 2004	NM	NM	Absent	Yes	NM	NM	NM	NM	No
Mizuno et al[6], 2007	NM	NM	Present	NM	NM	Marked/heterogenous	NM	NM	LN
Kawakami et al[11], 2007	Nodular	NM	Present	NM	NM	Marked/heterogenous	NM	NM	No
Hervieu et al[12], 2008	NM	Well-defined	Absent	NM	NM	Marked	NM	NM	No
Chiaravalli et al[13], 2009	NM	NM	NM	NM	NM	NM	NM	NM	LN
Ambrosini et al[7], 2009	NM	NM	Absent	NM	NM	NM	NM	NM	No
Agaimy et al[22], 2011	NM	Well-defined	Absent	NM	NM	NM	NM	NM	No
Agaimy et al[22], 2011	Irregular	NM	Absent	NM	Yes	Marked/heterogenous	NM	NM	NM
Agaimy et al[22], 2011	NM	NM	Absent	NM	NM	NM	NM	NM	No
Agaimy et al[22], 2011	NM	NM	NM	NM	NM	NM	NM	NM	NM
Terris et al[16], 2011	NM	NM	Absent	NM	NM	NM	NM	No	LN
Terris et al[16], 2011	NM	NM	Absent	NM	NM	NM	NM	Bile duct	LN
Terris et al[16], 2011	NM	NM	NM	NM	NM	NM	NM	No	Liver
Coyne et al[8], 2012	Lobulated	Well-defined	NM	NM	NM	NM	NM	NM	No
Hamidian Jahromi et al[3], 2013	Pedunculated	NM	NM	NM	NM	NM	NM	No	No
Yonenaga et al[4], 2016	Lobulated	Well-defined	NM	NM	No	NM	NM	NM	LN
Yonenaga et al[4], 2016	Borrmann type-2 lesion	NM	NM	NM	NM	NM	NM	NM	Liver
Kim et al[9], 2017	Polypoid	Well-defined	Present	NM	NM	Marked/homogenous	NM	No	No
Takagi et al[15], 2017	NM	NM	Present	NM	NM	Marked/heterogenous	NM	First jejunal vein	No
Our case, 2019	Oval	Well-defined	Present	No	No	Marked/heterogenous	Present	No	No

CT: Computed tomography; LN: Lymph node; NM: Not mentioned.