SSTR2 and Merkel cell skin cancer: The findings of positive expression of SST2 and/or SST3 in various solid tumors observed in our study are in concordance with previously published data, indicating that various human cancerous tissues exhibit SST expression, including GEP-NET, lymphoma, gastrointestinal carcinoma, head and neck carcinoma, lung carcinoma, Merkel cell carcinoma, malignant melanoma, meningioma, neuroblastoma, thyroid carcinoma, thymoma, breast carcinoma, pheochromocytoma, paraganglioma, prostate carcinoma, ovarian carcinoma, and endometrial carcinoma, as recently reviewed by Priyadarshini et al.11.