Keloids and neoplasms in the Rubinstein-Taybi syndrome.

In a series of 574 individuals with the Rubinstein-Taybi syndrome, 28 had keloids, and 19 had one or more neoplasms. The array of malignant neoplasms does not suggest an etiology or pathogenesis in common. One possible exception is that four cases of leukemia were observed. When the data for malignant and benign neoplasms were combined, at least nine of the 22 could have arisen from developmental errors. The apparent excess of keloid formation indicates overreaction to mild injury, with no known relevance to neoplasia but of potential interest in future studies of scar formation.

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