1) Hydrocytosis 
A hereditary deformation of red blood cells, which are swollen and cup-shaped, causing congenital haemolytic anaemia. ... See: Rh null syndrome. ... (05 Mar 2000) ... 
(sto″mә-to-si-to´sis) the presence of stomatocytes in the blood, as seen in liver disease, Rh-null syndrome, and a few other conditions. Called also hydrocytosis.
Type: Term Pronunciation: stō′mă-tō-sī-tō′sis Definitions: 1. A hereditary deformation of red blood cells, which are swollen and cup-shaped, causing congenital hemolytic anemia.