A hamartoma is a benign focal malformation that resembles a neoplasm in the tissue of its origin. This is not a malignant tumor and it grows at the same rate as the surrounding tissues. It is composed of tissue elements normally found at that site but which are growing in a disorganized mass.
This page contains content from the copyrighted Wikipedia article "Hamartoma"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.
