<prompt> Fanconis anemia is a -Constitutional anemiaHemolytic anemiaIron deficiency anemiaAuto - immune anemia  <response>: Ans. is a i.e., Constitutional anemia Constitutional pancytopenia o Constitutional pancytopenia is defined as decreased marrow production of the 3 major hematopoietic lineages on an inherited basis, resulting in anemia, neutropenia and thrombocytopenia. o Impoant causes are : - Fanconi anemia Amegakaryocytic thrombocytopenia Shwachman-Diamond syndrome Down syndrome Dyskeratosis congenita Noonan syndrome 