The disclosure of a diagnosis of cancer to patients is a controversial matt
er. There have been major differences in practice concerning this issue thr
ough time and between cultures. A questionnaire was sent to the doctors of
the Oporto Centre of the Portuguese Institute of Oncology in order to asses
s their attitudes. We received 45 responses (40%) from the 113 questionnair
es sent. Of these, 32 (71%) said that they disclose the diagnosis as a gene
ral policy or at the patients' request, and 13 (29%) disclose it rarely or
not at all. The most frequent reason indicated by these 13 physicians was t
hat the disclosure might damage the patients psychologically. Forty-four (9
8%) doctors inform the family of the diagnosis. Thirty-nine (87%) think tha
t patients are satisfied with the information provided. This study was carr
ied out in one oncological centre only, so it is inappropriate to conclude
that this is what happens throughout Portugal. As far as we know, this is t
he first study in Portugal addressing this area of practice. This subject i
s a very important topic of research both in Portugal and in other countrie
s, as many published recommendations are not research based.