Adjuvant radiation for major salivary gland adenoid cystic carcinoma in the modern era: updated patterns of…

Cohort studyOral oncology· Aug 2026

Adjuvant radiation for major salivary gland adenoid cystic carcinoma in the modern era: updated patterns of care and survival from the National Cancer Database (2004-2021).

Nishant Chadha, George Ashji, Sudarshan Ramanan … Nancy Y Lee

Head & Neck SurgeryCohort studyTreatmentQ1IF 2.4

Postoperative radiation linked to lower death risk after adenoid cystic carcinoma surgery

Adjuvant radiation for major salivary gland adenoid cystic carcinoma in the modern era: updated patterns of care and survival from the National Cancer Database (2004-2021).

Nishant Chadha … Nancy Y Lee

Oral oncology · Aug 2026

Background

Postoperative radiation therapy (postoperative radiation therapy) is widely recommended following surgical resection of adenoid cystic carcinoma (adenoid cystic carcinoma) of the major salivary glands, yet its association with overall survival in the contemporary treatment era remains incompletely characterized.

Methods

Using the National Cancer Database, we identified 2,384 patients with nonmetastatic adenoid cystic carcinoma of the major salivary glands who underwent definitive surgical resection between 2004 and 2021.

n = 2,384 patients

Results

postop radiation cuts death risk by about a quarter versus surgery alone

HR by subgroup · 95% CI

More results

Of these, 1,776 (74.5%) received postoperative radiation therapy and 608 (25.5%) underwent surgery alone.

More results

This benefit extended to patients with early-stage disease (pT1-2 N0/NX: HR 0.65, 95% CI 0.51-0.85, p = 0.001), large tumors without nodal involvement (pT3-4 N0/NX: HR 0.69, 95% CI 0.48-0.99, p = 0.043), and negative surgical margins (HR 0.67, 95% CI 0.51-0.89, p = 0.006).

“

Conclusion

These findings support the broad use of postoperative radiation therapy in nonmetastatic major salivary gland adenoid cystic carcinoma while identifying a high-risk subgroup warranting further investigation into the role of systemic therapy and intensified multimodality treatment.

Adjuvant radiation for major salivary gland adenoid cystic carcinoma in the modern era: updated patterns of care and survival from the National Cancer Database (2004-2021).

Adjuvant radiation for major salivary gland adenoid cystic carcinoma in the modern era: updated patterns of care and survival from the National Cancer Database (2004-2021).

Related papers