MRI Findings of Extramedullary Hematopoiesis of the Spleen in Patient with Idiopathic Myelofibrosis: 2 case report

ABSTRACT

MRI findings of extramedullary hematopoiesis of the spleen have not been described in the literature. Wereport the MRI features of this condition, as seen in two patients and confirmed by fine needle biopsy. Threesmall masses(< or =3cm) were isointense on T1WI, hyperintense on T2WI, and enhanced after the injection of gadolinium.Two 6cm-sized masses were hypointense on both T1WI and T2WI, and showed no contrast enhancement.