What is "subserosa"

The tela subserosa (or just subserosa) is a thin layer of tissue in the walls of various organs. It is a layer of connective tissue (usually of the areolar type) between the muscular layer (muscularis externa) and the serosa ( serous membrane).

The subserosa has clinical importance particularly in cancer staging (for example, in staging stomach cancer or uterine cancer).

The subserosa (sub- + serosa) is to a serous membrane what the submucosa (sub- + mucosa) is to a mucous membrane.