10 Huss Huss S S Wardelmann Wardelmann E E Goltz Goltz D D Activating PDGFRA mutations in inflammatory fibroid polyps occur in exons 12, 14 and 18 and are associated with tumour localization Activating PDGFRA mutations in inflammatory fibroid polyps occur in exons 12, 14 and 18 and are associated with tumour localization Histopathology. Here, PDGFRA is linked to neoplasm.