TABLE 1:

Final diagnoses of 53 parotid lesions, patients undergoing surgery, needle sizes, passes, and volume of acquired tissue

Pathologic Diagnosis	Patient Age (y)	M:F Ratio	Total Cases	Surgical Cases	Needle Gauge	Passes	Tissue Volume (mm³)^*
Benign neoplasm	17–72	22:11	33	15	14–18	1–4	18–128
Pleomorphic adenoma	17–54	8:7	15	11	16–18	2–4	36–128
Warthin tumor^†	34–72	12:3	15	12	14–18	1–3	18–105
Oncocytoma	58, 62	1:1	2	1	16	2	64
Neurilemmoma	56	1:0	1	1	16	2	64
Malignant neoplasm	38–81	10:3	13	6	14–20	2–5	36–262
Lymphoma	38–74	3:3	6	1	14–20	2–5	36–262
Primary carcinoma^‡	40–81	4:0	4	4	14–18	2–3	55–157
Metastatic carcinoma	40, 57	2:0	2	0	16, 18	2, 3	55, 64
Organized abscess, clear cell carcinoma^§	65	1:0	1	1	16	3	96
Nonneoplastic lesion	31–70	3:4	7	0	14–18	2–4	36–128
Sclerosing sialoadenitis	61, 70	0:2	2	0	16	2, 3	64, 96
Chronic inflammation	55–69	1:2	3	0	16, 18	2–4	36–128
Postoperative fibrosis	31	1:0	1	0	14	2	105
Lymphoid hyperplasia	34	1:0	1	0	18	3	55
Total	17–81	35:18	53	31	14–20	1–5	18–262

* Approximate volume = 3.14 × radius × radius × length of specimen notch or throw × number of passes.
† Of 53 cases, only one Warthin tumor was associated with hematoma.
‡ Including adenoid cystic, lymphoepithelioma–like, mucoepidermoid, and squamous cell carcinomas (one each).
§ Pathologic diagnoses were concordant between biopsy and surgery in all patients except this one. Clear cell carcinoma was found on surgicopathology.