<unk>  has a mortality rate of about 30%. For patients that survive the acute disease, supportive care may be required through a gradual recovery.Furthermore, patients may need care from a dermatologist or plastic surgeon for residual cosmetic lesions or an otolaryngologist for head & neck/airway involvement. On long-term followup, most patients have skin discoloration and/or mild disfiguration from the dormant tumor.
Kasabach–Merritt syndrome
Rapp–Hodgkin syndrome
Bare lymphocyte syndrome type II
Pitt–Hopkins syndrome
Schwartz–Jampel syndrome
Hypotrichosis–lymphedema–telangiectasia syndrome
Schwartz–Matsuo syndrome
Bare lymphocyte syndrome