"Erlenmeyer flask deformity"
"Harris lines"
Expected headings
"Skeletal"
"General features"
"Skull"
"Facial bones"
"Ribs"
"Spine"
"Extremities"
"Gastrointestinal/hepatobiliary"
"Lungs"
"Heart"
"The β globin chains are encoded by a single gene on chromosome 11; α globin chains are encoded by two closely linked genes on chromosome 16. Thus, in a normal person with two copies of each chromosome, there are two loci encoding the β chain, and four loci encoding the α chain. Deletion of one of the α loci has a high prevalence in people of African or Asian descent, making them more likely to develop α thalassaemias. β thalassaemias are common in Africans, but also in Greeks and Italians."
"extramedullary haematopoiesis may appear as lobulated masses covering the anterior or posterior segments of the ribs on chest x-ray; extramedullary haematopoiesis is also more frequently seen in the posterior mediastinum compared to the anterior mediastinum or the pelvis 8"