"Fish-mouth" vertebrae in sickle cell anemia.
Abdom Radiol (NY). 2017 Apr 11. doi: 10.1007/s00261-017-1147-y. [Epub ahead of print] Fonseca EK1, do Amaral E Castro A2, do Carmo Barros Santos D2, Rosemberg LA2.
The consecutive vertebral central depression seen in sickle cell anemia vertebrae is known as “fish-mouth” (Figs. 1, 2) vertebrae due to the similarity of upper vertebral inferior endplate together with lower vertebra superior endplate and a fish with opened mouth  (Fig. 3). It is thought to be secondary of subchondral infarctions of the central endplates and subsequent disk compression of the infarcted bone, leading to the deformity and arching of endplates. The peripheral portions of the endplates are usually spared because of collateral circulation [1, 2].