Unusual presentation of ‘numb chin syndrome’ as the manifestation of metastatic adenocarcinoma of the lung

摘要

INTRODUCTIONNumb chin syndrome (NCS) is the presence of hypoaesthesia or paraethesia of the lip and chin over the distribution of the mental nerve. It is often caused by the presence of a metastatic tumour in the mandible or the base of skull and represen