XXXX : the most common @entity5 of infancy.

@entity1 @entity5 @entity14972
We describe the clinical courses of four @entity1 with @entity14972 ( @entity14972 ). This entity is a mesenchymal disorder of early infancy characterized by the formation of @entity5 in skin, muscle, viscera, bone, and subcutaneous tissues. Previously known as @entity14972 , @entity14972 was formerly thought to be a rare condition that was frequently fatal. The majority of the 170 affected @entity1 we describe have been diagnosed since 1980. Furthermore, the mortality rate for these @entity1 is less than 15%. Our review includes the clinical manifestations, as well as histopathologic features, and discusses the prognosis in affected @entity1 . We found that @entity1 with solitary lesions or multiple lesions without visceral involvement generally have a benign course. However, in @entity1 with the multicentric form of the disorder and visceral involvement, 73% have died. Because the lesions may not be easily discernible and most spontaneously resolve, the condition is underdiagnosed and underreported. @entity14972 is the most common @entity5 of infancy and must be considered when evaluating @entity1 who present with either @entity5 , particularly during the neonatal period.
