Clinical Presentation of Oropharyngeal Squamous Cell Carcinoma (SCC)

A painless neck mass (metastatic cervical lymphadenopathy) and sore throat:
- Are the two most common presenting features of oropharyngeal squamous cell carcinoma (OPSCC):
  - But the pattern differs strongly by HPV status:
    - HPV-associated tumors (tonsil, base of tongue) frequently present with an asymptomatic or occult primary and a cervical neck mass
    - HPV-negative tumors more often produce local symptoms from the primary site such as sore throat, dysphagia, and odynophagia:
      - Because these symptoms overlap with benign conditions (reflux, globus, branchial cleft cyst), any persistent neck mass or throat symptom in an adult should be considered malignant until proven otherwise
Most common presenting symptoms / signs:
- Neck mass (cervical lymphadenopathy):
  - The single most frequent initial complaint (~ 44% to 52%):
    - Typically a new, painless, often cystic level II node:
      - Commonly the first and only sign of an HPV-associated primary
- Sore throat:
  - Persistent, often unilateral (~ 33%)
- Dysphagia:
  - Difficulty swallowing
- Odynophagia:
  - Pain on swallowing
- Otalgia:
  - Referred ear pain via the glossopharyngeal /vagal pathways:
    - Especially with tonsil and base-of-tongue lesions
- Globus sensation:
  - Feeling of a mass or fullness in the throat
- Visualized oropharyngeal mass or tonsillar asymmetry / ulceration
Less common / advanced-disease features:
- Voice change / muffled (“hot potato”) voice
- Hemoptysis or blood-tinged saliva
- Unintentional weight loss
- Trismus and impaired tongue mobility / dysarthria:
  - Reflecting deep muscular or hypoglossal nerve involvement (base of tongue), often signaling locally advanced disease
- Otalgia with a normal otologic exam:
  - Should specifically prompt oropharyngeal evaluation
- HPV-positive vs HPV-negative presentation:
  - This distinction is clinically important because it drives suspicion in patients lacking traditional tobacco / alcohol risk factors

Clinical caveats:
- HPV-associated cystic nodal metastases are frequently mistaken for benign cysts:
  - The prevalence of malignancy in a cystic neck mass in patients > 40 years is approximately 80%:
    - So FNA (ideally image-guided) is warranted rather than observation
- Anatomically hidden oropharyngeal primaries become symptomatic late, so absence of a visible lesion does not exclude malignancy:
  - Nasolaryngoscopy and cross-sectional imaging are indicated for persistent symptoms
- OPSCC is a leading cause of carcinoma of unknown primary:
  - p16 / HPV testing of nodal tissue helps localize the oropharynx as the source
References:
- Dunn LA, Ho AL, Pfister DG. Head and Neck Cancer. JAMA. 2025.
- McIlwain WR, Sood AJ, Nguyen SA, Day TA. Initial Symptoms in Patients With HPV-Positive and HPV-Negative Oropharyngeal Cancer. JAMA Otolaryngol Head Neck Surg. 2014.
- Johnson DE, Burtness B, Leemans CR, et al. Head and neck squamous cell carcinoma. Nat Rev Dis Primers. 2020.
- Lechner M, Liu J, Masterson L, Fenton TR. HPV-associated oropharyngeal cancer: epidemiology, molecular biology and clinical management. Nat Rev Clin Oncol. 2022.
- Wilbur J, Tran VL, Doobay MF. Evaluation of Neck Masses in Adults. Am Fam Physician. 2026.
  Dunn LA, Ho AL, Pfister DG. Head and Neck Cancer. JAMA. 2025.
- Khalid MB, Ting P, Pai A, et al. Initial Presentation of Human Papillomavirus-Related Head and Neck Cancer: A Retrospective Review. Laryngoscope. 2019.
- McIlwain WR, Sood AJ, Nguyen SA, Day TA. Initial Symptoms in Patients With HPV-Positive and HPV-Negative Oropharyngeal Cancer. JAMA Otolaryngol Head Neck Surg. 2014.
- Lawless AK, Duruchukwu E, Bergamin S, et al. De-Escalation of Radiotherapy in the Treatment of Human Papillomavirus-Associated Oropharyngeal Cancer. Cochrane Database Syst Rev. 2025.
- McIlwain WR, Sood AJ, Nguyen SA, Day TA. Initial Symptoms in Patients With HPV-Positive and HPV-Negative Oropharyngeal Cancer. JAMA Otolaryngol Head Neck Surg. 2014.
- Johnson DE, Burtness B, Leemans CR, et al. Head and neck squamous cell carcinoma. Nat Rev Dis Primers. 2020.
- Jerjes W, Upile T, Hamdoon Z, et al. Photodynamic therapy: The minimally invasive surgical intervention for advanced and/or recurrent tongue base carcinoma. Lasers Surg Med. 2011.
- Wilbur J, Tran VL, Doobay MF. Evaluation of Neck Masses in Adults. Am Fam Physician. 2026.
- Amin JD, Rodriggs T, Weir KA, Snider JW, Hatten KM. Prospective Evaluation of Swallowing Symptoms in Human Papillomavirus-Associated Oropharynx Cancer. Dysphagia. 2022.
- Dunn LA, Ho AL, Pfister DG. Head and Neck Cancer. JAMA. 2025.