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Histological types of 609 patients with parathyroid cancer from the Surveillance, Epidemiology, and End Results (SEER) database, 1975–2016.
| Histological Variant (n = 609) | Frequency (%) | p-Value |
|---|---|---|
| Adenocarcinoma NOS | 607 (99.7) | <0.005 |
| Spindle cell carcinoma | 2 (0.3) |
