Pyogenic granuloma over the venous component of a mixed vascular malformation

A 52‐year‐old man presented with a rapidly growing red tumor on the central neckline. It had appeared over a congenital flat and pinkish vascular lesion that involved the shoulder and the upper anterior area of his chest. Intermingled with the pinkish stain, there were also some blue nodules several millimeters in diameter. Histopathologic examination revealed that the full lesion was a mixed venous‐capillary malformation. The red tumor was excised and diagnosed as a pyogenic granuloma developing over the venous component of the vascular malformation. To our knowledge, a pyogenic granuloma growing over a venous malformation had not yet been described.

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