• B Zeller, I Storm-Mathisen, B Smevik, S Sund, K Danielsen, and S O Lie.
• Barneavdelingen, Sentralsykehuset i Akershus, Nordbyhagen, Norway.
• Eur. J. Pediatr. 1997 Nov 1; 156 (11): 841-4.

UnlabelledThe prognosis of infantile myofibromatosis (IMF) depends on the organs involved: the prognosis is very poor if vital viscera are affected, but excellent if there is no visceral involvement. We report the case of a boy presenting with a pathological fracture at the age of 6 weeks. Progressive osteolytic lesions in the whole skeleton until the age of 8 months led to respiratory failure due to a softened thoracic wall requiring mechanical ventilation for 11 months. No pulmonary, laryngeal or other visceral involvement was found. In spite of the rapidly progressing disease and serious complications only supportive therapy was given. The lesions subsided gradually leaving slight deformities but normal function. At the age of 3.5 years the boy has an excellent quality of life.ConclusionThis case illustrates that even in progressing, complicated multifocal infantile myofibromatosis (without visceral involvement) the lesions can resolve without antitumour treatment if high quality intensive care is supplemented.

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