A distinct lethal neonatal chondrodysplasia with snail‐like pelvis: Schneckenbecken dysplasia

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Abstract
We describe the clinical, radiographic, histopathologic, and ultrastructural features of a distinct neonatal lethal chondrodysplasia inherited as an autosomal recessive trait. The characteristic radiographic findings consist of flattened, hypoplastic vertebral bodies; short ribs; hypoplastic iliac bones with “a snail‐like” configuration; short, broad long‐bones with dumbbell‐like appearance; short and wide fibula; and precocious ossification of the tarsus. Chondro‐osseous histology is characteristic with hypervascularity, increased cellular density, and normal size chondrocytes with a centrally located round nucleus and absence of lacunar space. Because of the snail‐like radiographic appearance of the pelvis in this disorder, we propose the name “Schneckenbecken dysplasia” (ie, German for snail pelvis).

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