SST and head and neck squamous cell carcinoma: Our observations compare favorably with previous reports indicating that the expression of different SST-subtypes, including SST2 and SST3, is consistently increased in other tumors, compared to normal tissues, including human prostate [32,33], pituitary [17,21,34], and neuroendocrine tumors [14,25], among others, and with previous scarce observations, indicating that the head and neck squamous cell carcinoma specimens express different SST-subtypes (mainly SST1,2,5 using semi-quantitative immune-histochemical staining) [6,7,8].