Article Figures & Data
Figures
- Fig 1.
A 69-year-old man with low-grade lymphoma of the parotid gland.
A, Hypoechoic mass with linear echogenic foci within the tumor.
B, Core biopsy of the mass with a cutting needle passing through the tumor.
Tables
- 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.
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