Metanephric dysplastic hematoma of the sacral region
Metanephric dysplastic hematoma of the sacral region (MDHSR) has been described by Cozzutto and Lazzaroni-Fossati in 1980, by Posalaki et al. in 1981 and by Cozzutto et al.
Source: Wikipedia — Metanephric dysplastic hematoma of the sacral region (CC BY-SA 4.0)