“…A number of syndromes may be associated with the presence of skin appendages in the coccygeal area and these include chromosomal abnormalities, for example, Pallister-Killian syndrome, multiple congenital anomaly syndromes such as Simpson-Golabi-Behmel (Garganta and Bodurtha, 1992) and Crouzon syndrome (Lapunzina et al, 2005) and skeletal dysplasias such as metatropic dysplasia (O'Sullivan et al, 1998). They are usually lumbosacral protrusions consisting of normal or abnormal tissue, for example, prolongation of the coccygeal vertebrae, lipoma or glioma.…”