Sweet syndrome as the leading symptom in the diagnosis of gastric cancer.

Sweet syndrome is a neutrophilic infiltration of the papillary dermis, which may be associated with the presence of unknown malignancies, either haematological or solid tumours, in 1 out of 5 cases, being considered then as a paraneoplastic syndrome. We present the case of a male with a locally advanced gastric cancer whose final diagnosis was led by the prior debut of Sweet syndrome not explained by other causes.