Approach to Painless Parotid Mass with Enlarged Lymph Nodes

Initial Assessment

The American College of Radiology recommends MRI with and without IV contrast as the preferred initial imaging modality for comprehensive evaluation of a painless parotid mass with lymphadenopathy, providing detailed information about the extent of the mass, local invasion, and possible extension into surrounding structures 1
A recent onset of symptoms, such as 2 days, may suggest an inflammatory or infectious process, but does not rule out malignancy, according to the National Comprehensive Cancer Network 1
Facial weakness, such as VII cranial nerve dysfunction, may suggest malignancy or nerve involvement, as stated by the American Academy of Otolaryngology 1
Fever, weight loss, and night sweats may suggest lymphoma or infection, as reported by the Journal for ImmunoTherapy of Cancer 2

The American College of Radiology recommends MRI with and without IV contrast as the preferred initial imaging modality, providing comprehensive information about the extent, local invasion, and possible extension of the mass 1
CT with IV contrast can be used when MRI is contraindicated, as stated by the American College of Radiology 1
Fine needle aspiration biopsy (FNAB) is essential to distinguish between inflammatory, infectious, and malignant causes, according to the American Academy of Otolaryngology 1
Core needle biopsy or incisional biopsy may be necessary if FNAB is inconclusive, as reported by the National Comprehensive Cancer Network 1

The American Academy of Otolaryngology recommends surgical excision for salivary gland malignancies, with facial nerve preservation critical unless there is preoperative dysfunction or direct tumor invasion 1
Chemotherapy ± radiation may be used for lymphoma, avoiding unnecessary parotidectomy, as stated by the National Comprehensive Cancer Network 4
Medical management with anti-inflammatory or antimicrobial therapy may be used for inflammatory conditions, such as sialadenitis with reactive lymphadenopathy, as reported by the American Academy of Otolaryngology 3

Malignant neoplasms, such as lymphoma and metastatic disease, should be considered in the differential diagnosis, as stated by the National Comprehensive Cancer Network 4
Benign neoplasms, such as pleomorphic adenoma, should also be considered, as reported by the American Academy of Otolaryngology 1
Non-neoplastic conditions, such as sialadenitis with reactive lymphadenopathy and intraparotid lymph node hyperplasia, should also be considered, as stated by the American Academy of Otolaryngology 3