Histological diagnosis of malignancy is a constellation of morphological, histochemical, immunohistochemical and even ultrastructural details. Histopathologists rely on a spectrum of morphological features in order to arrive at a diagnosis of malignancy. This includes pleomorphism, mitotic activity, angiolymphatic permeation and perineural infiltration. It came to our attention that the latter phenomenon can be considered evidence of malignancy, but it is in fact nerve fibre colonisation by banal glands. This can result in pathologists making an erroneous …