TY - CHAP M1 - Book, Section TI - Anemia, Megaloblastic A1 - Hay, Jr, William W. A1 - Levin, Myron J. A1 - Deterding, Robin R. A1 - Abzug, Mark J. Y1 - 2017 N1 - T2 - Quick Medical Diagnosis & Treatment Pediatrics AB - Caused by deficiency of cobalamin (vitamin B12), folic acid, or bothCobalamin deficiency due to dietary insufficiency may occur in infants who are breast fed by mothers who are strict vegetarians or who have pernicious anemiaIntestinal malabsorption is the usual cause of cobalamin deficiency in children and occurs withCrohn diseaseChronic pancreatitisBacterial overgrowth of the small bowelInfection with the fish tapeworm (Diphyllobothrium latum)After surgical resection of the terminal ileumDeficiencies due to inborn errors of metabolism (transcobalamin II deficiency and methylmalonic aciduria) also have been describedFolic acid deficiency may be caused by inadequate dietary intake, malabsorption, increased folate requirements, or some combination of the three SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1145453629 ER -