“…Hamartomas involving the peripheral nerves were first described in 1953 by Mason,1 mostly involving the median nerve in the forearm and wrist and usually presenting as chronic CTS. Acute CTS may occur consecutive to hamate and triquetral fractures,2 acute metacarpal osteomyelitis3 compression by anomalous flexor digitorum superficialis,4 after internal fixation of scaphoid,4 secondary to pyogenic infections,5 classical hemophilia,6 von Willebrand's disease7 oral anticoagulant therapy,8 distal radial fractures,9 filarial infections,10 thrombosed persistent median artery,11 idiopathic tumoral calcinosis,12 decompression sickness,13 Hansen's disease,14 peritendinitis calcarea,15 pseudogout,16 scaphoid pseudoarthroses 17. Bilateral cases may occur due to human parvovirus B19 infection 18…”