Nivolumab With or Without Tadalafil in Treating Patients With Recurrent Head and Neck Squamous Cell Carcinoma That Can Be Removed by Surgery

Conditions:   Lip, Oral Cavity and Pharynx;   Larynx
Interventions:   Biological: Nivolumab;   Drug: Tadalafil;   Procedure: Therapeutic Conventional Surgery
Sponsors:   Sidney Kimmel Cancer Center at Thomas Jefferson University;   Bristol-Myers Squibb
Not yet recruiting - verified July 2017

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