Diagnosis and Management of Squamous Cell Carcinoma of Unknown Primary in the Head and Neck

Publication Date: April 23, 2020

Key Points

Key Points

Management decisions for squamous cell carcinoma of unknown primary (SCCUP) are best decided in the context of a multidisciplinary tumor board and with careful consideration of human papillomavirus (HPV) status, disease burden and distribution in the neck, a patient’s overall health and well-being, potential treatment-related toxicity, and rehabilitation potential for functional recovery.

Preoperative Evaluation

...rative Evaluation...

...tients undergoing evaluation for a...


...e-Needle aspiration or core biopsy of...


...human papillomavirus (HR-HPV) testing should be...


...t enhanced computed tomography (CECT) of...


...: If a primary is not evident on clinical e...


Diagnostic And Therapeutic Surgical Procedures

...ostic And Therapeutic Surgical Procedu...

2.1: Patients should undergo a complete ope...


...2: For patients with unilateral lymphadenopa...


...ts with bilateral lymphadenopathy, if a pri...


...4: For patients in whom the primary tumor i...


2.5: Tissue specimens from suspected prima...


...6: Intraoperative frozen section of biopsies...


Surgical Considerations

...rgical Consideration...

...all-volume bilateral neck disease with no c...


....3: Large-volume bilateral neck dise...


3.4: When primary surgery is planned, Levels II...


...r unilateral, small-volume neck disease, ei...


Radiotherapy

...otherapy

...ts receiving radiotherapy or concur...


...ients treated with primary radiotherapy for u...


...eated with primary radiotherapy for un...


4.4: In patients presenting with clini...


...ients with a clinicopathologic present...


...: Patients treated with primary radiotherapy fo...


...n addition to anatomic mucosal regi...


...tients treated with primary radiotherapy for N...


...9: For patients treated with primary radiotherapy,...


...receiving radiotherapy or concurrent chemor...


...ients for whom no primary site is patholo...


...Adjuvant radiotherapy should not be adm...


...3: Adjuvant radiotherapy should be administered t...


...t radiation dose to the dissected...


Systemic Therapy

...temic Therapy...

...urrent administration of cisplatin with defin...


...: Concurrent administration of cisplatin with...


...ent administration of cisplatin to adjuvant r...


...t administration of cisplatin with defini...


Figure 1. Diagnosis & Management Algorithm of SCCUP in the Head and Neck

.... Diagnosis & Management Algorithm of SC...

Figure 2. Diagnosis & Management Algorithm of SCCUP in the Head and Neck (continued)

...nosis & Management Algorithm of SCCUP...