TABLE 2.
Cytological findings from 15 parathyroid adenomas, 10 follicular thyroid neoplasms, and 10 poorly differentiated thyroid carcinomas
| PAs (15) | FNs (10) | PDTCs (10) | |
|---|---|---|---|
| Background | |||
| Colloid globules | 13.3% (2) | 70.0% (7)** | 80.0% (8)** |
| Foamy histiocytes | 6.7% (1) | 0% (0) | 10.0% (1) |
| Neutrophils | 0% (0) | 0% (0) | 0% (0) |
| Lymphocytes | 0% (0) | 0% (0) | 10.0% (1) |
| Capillaries | 20.0% (3) | 60.0% (6) | 50.0% (5) |
| Arrangements | |||
| Tissue fragments | 60.0% (9) | 50.0% (5) | 60.0% (6) |
| Trabecular | 93.3% (14) | 80.0% (8) | 70.0% (7) |
| Wedge | 86.7% (13) | 0% (0)*** | 30.0% (3)** |
| Insular | 80.0% (12) | 0% (0)*** | 50.0% (5) |
| Cribriform | 53.3% (8) | 0% (0)*** | 80.0% (8) |
| Microfollicular | 26.7% (4) | 100% (10)** | 70.0% (7) |
| Isolated | 53.3% (8) | 30.0% (3) | 70.0% (7) |
| Naked cells | 73.3% (11) | 40.0% (4) | 30.0% (3)* |
| Tumor cells | |||
| Oxyphilic cytoplasm | 53.3% (8) | 30.0% (3) | 20.0% (2) |
| Round cell predominant | 100% (15) | 90.0% (9) | 30.0% (3)*** |
| Multinucleation | 0% (0) | 30.0% (3) | 40.0% (4)* |
| Anisonucleosis | 26.7% (4) | 50.0% (5) | 40.0% (4) |
| Nuclear grooves | 0% (0) | 40.0% (4)* | 80.0% (8)*** |
| Salt and pepper chromatin | 86.7% (13) | 0% (0)*** | 20.0% (2)** |
| Prominent nucleoli | 0% (0) | 20.0% (2) | 30.0% (3) |
Note: Vs parathyroid adenoma.
Abbreviations: FN, follicular neoplasm; PA, parathyroid adenoma; PDTC, poorly differentiated thyroid carcinoma.
*
P < .05.
**
P < .01.
***
P < .001.