Differential diagnosis Because this is a rare tumor, not many family physicians or oncologists are familiar with this disease.<unk>  in young patients can be mistaken for other abdominal tumors including rhabdomyosarcoma, neuroblastoma, and mesenteric carcinoid. In older patients<unk>  can resemble lymphoma, peritoneal mesothelioma, and peritoneal carcinomatosis. In males<unk>  may be mistaken for germ<unk>  or testicular cancer while in females<unk>  can be mistaken for Ovarian cancer.<unk>  shares characteristics with other<unk><unk>  blue<unk>  cancers including Ewing's sarcoma, acute leukemia,<unk> <unk>  mesothelioma, neuroblastoma, primitive neuroectodermal tumor, rhabdomyosarcoma, and Wilms' tumor.
Desmoplastic small-round-cell tumor
Plexiform angiomyxoid myofibroblastic tumor
Perivascular epithelioid cell tumour
Adenomatoid tumor
Solid pseudopapillary tumour
Sclerosing epithelioid fibrosarcoma
Small-blue-round-cell tumor
Multinucleate cell angiohistiocytoma