Structure: Noncancerous Tumours

Noncancerous (benign) tumours are common and include lipomas, which are fatty lumps beneath the skin, and many other skin lesions. These types of tumour do not invade tissue, but they may compress nearby structures as they grow. Noncancerous tumours do not spread around the body.

Structure of a noncancerous tumour

A noncancerous tumour has an outer fibrous capsule that separates it from the surrounding normal tissue.

From the 2010 revision of the Complete Home Medical Guide © Dorling Kindersley Limited.

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