Greenberg dysplasia (MONDO_0008974, a Monarch Disease Ontology term) is a very rare lethal skeletal dysplasia characterized by fetal hydrops, short limbs and abnormal chondro-osseous calcification. The disease is characterized by early in utero lethality and affected fetuses are considered as nonviable. Also known as: hem dysplasia, hydrops-ectopic calcification-motheaten syndrome, skeletal dysplasia, Greenberg type.