Table 4.

Clinical and Cytopathologic Characteristics of the False-Negative Cases (n=3).

Case	Age/Sex	Location	Size (cm)	Imaging	Milan System Diagnostic Category	Cytopathologic Findings	Ancillary testing	Follow-up Diagnosis
1	11/F	Parotid	5.5	N/A	Benign neoplasm	Benign epithelial cells, lack of mucin, favor pleomorphic adenoma	N/A	MEC, low grade
2	12/F	Submandibular	3.6	Left submandibular gland swelling with central hypodensity	Nonneoplastic	Few glandular cells, acute and chronic inflammatory cells and acinar groups	N/A	Involved by AML
3	18/M	Parotid	7.3	Large enhancing right parotid gland mass with adjacent lymphadenopathy	Nonneoplastic	Abundant lymphocytes with variation in size and scattered tingible body macrophages, favor reactive intraparotid lymph node	Flow cytometry analysis shows a polytypic population of lymphocytes	NLPHL

Abbreviations: MEC, mucoepidermoid carcinoma; AML, acute myeloid leukemia; NLPHL, nodular lymphocyte predominant Hodgkin lymphoma.