Table 1.

Histopathological characteristics of the common differential diagnosis of mesenteric fibromatosis

Differential diagnosis	Gross features	Histopathological features	Immunohistopathological features
Mesentric fibromatosis	Tan gray masses with infiltrative margins and homogenous parenchyma without any hemorrhagic, cystic or necrotic changes	Monotonous spindle cells growing in long, sweeping fascicles Minimal or complete absence of mitotic activity	Vimentin, B-catenin positive, negative for CD34,c-kit
Solitary fibrous tumor	Well defined masses with firm, pale cut surface showing whorled fibrous tissue.	Scarce cellularity increase vascularity. showing hyalanization.	CD34, CD99 and Bcl-2 positive
GIST	Expansive,firm, pale multilobulated soft masses associated with areas hemorrhagic, cystic and necrotic changes	Spindle and epitheloid cells with organoid cellular arrangement. Varying degree of mitosis present with or without atypia.	c-kit CD117,CD34 positive, negative for beta catenin
Inflammatory Myofibroblastic tumour.	Non encapsulated, circumscribed nodular masses with occasional infiltrative margins	Increased cellularity with predominance of inflammatory cells and myofibroblasic proliferation	Activin like kinase positive, beta catenin negative.