Diagnostic Approach for Hard, Fixed Neck Mass with Progressive Hoarseness

Clinical Assessment and Diagnostic Algorithm

The American Academy of Otolaryngology-Head and Neck Surgery recommends Fine-Needle Aspiration (FNA) as the first-line diagnostic investigation for a hard, fixed neck mass with progressive hoarseness, due to its high sensitivity and specificity for diagnosis 1
A hard, fixed mass is a concerning feature that indicates increased risk for malignancy, with fixation to adjacent tissues and firm consistency being key physical examination characteristics 2, 3
The duration of the mass, in this case, 10 weeks, also represents an increased risk, as masses present for ≥2 weeks without significant fluctuation are more likely to be malignant 3

CT or MRI with contrast should be ordered before or concurrently with biopsy to characterize the mass, evaluate its relationship to surrounding structures, and identify a primary site 4, 1
FNA is strongly recommended as the initial diagnostic test for tissue sampling in patients with neck masses at increased risk for malignancy, due to its minimal discomfort, low complication rate, and rapid, cost-effective nature 1, 5
The benefits of FNA include high sensitivity and specificity for diagnosis, minimal discomfort, low complication rate, and low risk of tumor seeding compared to open biopsy 1, 6

If FNA is inadequate or indeterminate, repeat FNA (possibly ultrasound-guided) should be considered, and if repeat FNA is non-diagnostic, core needle biopsy may be necessary 7
Open biopsy (isthmectomy) should be considered only after FNA, imaging, and examination under anesthesia have failed to yield a diagnosis, due to its higher risk of complications and potential to compromise future surgical management 8, 1, 5

If the FNA reveals a cystic component, continued evaluation is necessary, as cystic neck masses can still be malignant 5
Delaying diagnosis by prescribing antibiotics without clear signs of infection, assuming a cystic mass is benign without adequate follow-up, and proceeding directly to open biopsy without first attempting FNA and imaging are common pitfalls to avoid 2, 8, 5, 1