Proliferative Lesions and Neoplasia

I. Causative Agent and Disease Reports of abnormal proliferation of tissues in marine decapod crustaceans have been extremely rare. There have been less than a dozen cases in the literature of which only four have shown convincing evidence of cancer. Cancers or neoplasms are growths of abnormal cells that proliferate uncontrollably and have no useful function as opposed to cells that are normal that may proliferate excessively (hyperplasia) due to some functional demand or stimulus.