Rouleau, Caroline A retroperitoneal fibrous lesion with a specific CTNNB1 mutation but absence of beta-catenin immunodetection: benign process or unusual desmoid-type fibromatosis? [electronic resource] - Pathology Dec 2011 - 751-3 p. digital Publication Type: Case Reports; Letter ISSN: 1465-3931 Standard No.: 10.1097/PAT.0b013e32834c7e5d doi Subjects--Topical Terms: AdultFemaleDesmoid Tumors--geneticsGenotypeHumansKidney Neoplasms--pathologyMutationNeoplasms, Second Primary--geneticsPhenotypeRetroperitoneal Neoplasms--geneticsWilms Tumor--pathologybeta Catenin--genetics