A connective tissue neoplasm or connective tissue tumor is a

neoplasm A neoplasm () is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is uncoordinated with that of the normal surrounding tissue, and persists ...

arising from the tissues of the connective tissue. (Not all tumors ''in'' the connective tissue are ''of'' the connective tissue.)

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{{neoplasm-stub Anatomical pathology Tissues (biology) Connective and soft tissue neoplasms