https://www.selleckchem.com/pr....oducts/tqb-3804-egrf
CONCLUSIONS Although it is an unusual and uncommon presenting entity of lung cancer, our case report accentuates how a simple solitary cutaneous palpable mass can be an alarming sign of a serious underlying occult malignancy. Moreover, our case report also highlights the diagnostic and prognostic value of immunohistochemistry characteristics of the tumor and how it can guide the clinician to identify the primary site, which, in this case, was adenocarcinoma of the lung. The serotonergic system is implicated in multiple aspect