[On the concept of semimalignancy from the standpoint of general tumor pathology]

In the past, the term "semimalignancy" had been applied to a heterogeneous group of tumours, namely to tumours of a low grade of malignancy, to tumours of an equivocal dignity and even to benign lesions. Furthermore, the term as such is highly ambiguous. This is discussed in the light of theoretical considerations and of suitable examples. It is suggested not to apply the term "semimalignancy" any longer.