{Reference Type}: Case Reports {Title}: Lethal fat embolism complicating Sotos syndrome. {Author}: Gilbert JD;Byard RW; {Journal}: Med Sci Law {Volume}: 58 {Issue}: 2 {Year}: Apr 2018 {Factor}: 2.051 {DOI}: 10.1177/0025802418758210 {Abstract}: Sotos syndrome is a rare congenital syndrome caused by deletions or mutations in the NSD1 gene (chromosome 5q35) which results in overgrowth. A wide range of manifestations may result in unexpected and/or early death, including congenital cardiac malformations and tumours, epilepsy, intra-tumoural haemorrhage or embolism and bleeding diatheses. A case of lethal pulmonary fat embolism complicating revision of a left total hip replacement following spontaneous fracture is reported in a 39-year-old man with Sotos syndrome. This case demonstrates that orthopaedic problems later in life may be added to potential causes of premature death in this syndrome.