Balkan C.Ersoy B.Nese N.2024-07-222024-07-22200503000605http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/19862Myelofibrosis is a rare disorder in childhood. In this report, we present the case of a 6-month-old infant with myelofibrosis due to severe vitamin D deficiency rickets. The characteristic clinical and laboratory findings of myelofibrosis improved rapidly after vitamin D therapy. In developing countries, nutritional rickets is still an important health problem. Rickets is not only a skeletal system-related disorder, it is also a systemic disorder. Rickets should be considered, therefore, as one of the conditions that can lead to severe haematological disorders in infants.Englishcalciumphosphorusvitamin Danemiaarticlebone densitybone marrow biopsybone radiographybreast feedingbronchopneumoniacase reportclinical examinationclinical featuredeveloping countrydisease associationdisease severityfollow uphepatosplenomegalyhumaninfantlaboratory testmalemyelofibrosisnutritional deficiencypatient referralricketstreatment outcomevitamin D deficiencyvitamin supplementationArticle10.1177/147323000503300311