MedGen

A rare myelodysplastic syndrome (MDS) characterized by ineffective hemopoiesis affecting one or more blood cell lineages (myeloid, erythroid or megakaryocytic) leading to peripheral blood cytopenias and an increased risk of developing leukaemia. [from ORDO]

A rare, usually benign tumor that arises from the kidney. It belongs to the spectrum of mixed epithelial and stromal tumor family. It usually affects females. It is characterized by the presence of a biphasic pattern with tubular and cystic structures in a spindle cell stroma. Patients usually present with flank pain and hematuria. [from NCI]

A type of myelodysplastic syndrome characterized by less than 5% myeloblasts in the bone marrow, but with 15% or greater red cell precursors in the marrow being abnormal iron-stuffed cells called ringed sideroblasts. [from HPO]

A progressive demyelination within the central nervous system associated with reactivation of a latent JC virus infection. [from NCI]