Das, Anirban, Partha Pratim Roy, Anirban Sarkar, Samadarshi Datta, Subir Dey, and Nandita Basu. 2012. “Mediastinal Primitive Neuroectodermal Tumour (PNET) – A Rare Case of Horner’s Syndrome”. Journal of Medicine 13 (1):85-87. https://doi.org/10.3329/jom.v13i1.8762.