%0 Journal Article %T Occam¡¯s razor versus Hickam¡¯s dictum: two very rare tumours in one single patient %A Andr¨¦ Ferreira Sim£¿es %A Gl¨®ria Nunes da Silva %A Joana Barbosa Rodrigues %A Marta Freixa %A Sara ¨²ria %J Archive of "Oxford Medical Case Reports". %D 2019 %R 10.1093/omcr/omz029 %X Occam's razor, the principle that a single explanation is the most likely in medicine, assumes that when a patient has multiple symptoms the clinician seeks a single diagnosis rather than diagnosing multiple and different ones. However, as proposed by Hickam¡¯s dictum, sometimes rare different diseases occurred in only one patient %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6544422/