Evaluation and Management of Neck Masses

Introduction to Neck Mass Evaluation

The American Academy of Otolaryngology guidelines state that antibiotics should only be used for neck masses when there are clear signs and symptoms of bacterial infection, including local signs such as warmth and erythema of overlying skin, acute onset, tenderness to palpation, and systemic signs like fever, tachycardia, and elevated white blood cell count 1, 2, 3
Most neck masses in adults are neoplastic, not infectious, and the imaging description of a "slightly enhancing mass" with "possible internal necrosis" and proximity to major vessels raises significant concern for malignancy rather than infection 1, 2, 6, 7

The American Academy of Otolaryngology guidelines provide a clear algorithm for the evaluation of neck masses, including the need for cultures from FNA fluid, targeted physical examination, and consideration of additional ancillary tests such as HPV testing 1, 2, 3, 8, 9
Red flags for malignancy in neck masses include size >1.5 cm, mass effect on adjacent structures, proximity to major vessels, possible internal necrosis, and soft tissue stranding and loss of fat planes 2, 4, 6, 8

The lack of cultures from FNA is a critical gap that must be addressed, and FNA without cultures and cytology is inadequate for diagnosis 1, 2
A targeted physical examination, including visualization of the larynx, base of tongue, and pharynx, should be performed to search for a primary malignancy 2, 3, 9
If diagnosis remains uncertain after FNA and imaging, examination under anesthesia with panendoscopy and directed biopsies should be considered 2, 3, 9

Empirical treatment with antibiotics without clear infectious signs can lead to delayed diagnosis of malignancy, development of bacterial resistance, unnecessary costs, and false reassurance 1, 2, 3, 5
Cystic or necrotic neck masses in adults are malignant until proven otherwise, and the AAO-HNS guidelines warn that HPV-positive oropharyngeal squamous cell carcinoma can present as cystic cervical metastases mistaken for branchial cleft cysts 2, 3, 4, 8, 9