TABLE 1.
Patient characteristics and treatment for parathyroid carcinoma (1973–2013)
| Characteristic | Number (n) | % |
|---|---|---|
| Gender | ||
| Male | 267 | 51.3 |
| Female | 253 | 48.7 |
| Race | ||
| White | 392 | 75.4 |
| Black | 84 | 16.2 |
| Other | 44 | 8.5 |
| Age (year) | ||
| < 45 | 120 | 23.1 |
| 45–59 | 199 | 38.3 |
| 60–69 | 109 | 21.0 |
| 70–79 | 66 | 12.7 |
| 80+ | 15 | 2.9 |
| Extent of disease | ||
| Local disease | 348 | 66.9 |
| Regional disease | 159 | 30.6 |
| Metastatic disease | 12 | 2.3 |
| Unstaged | 1 | 0.2 |
| LN status | ||
| Negative | 289 | 55.6 |
| Positive | 9 | 1.7 |
| Not reported | 222 | 42.7 |
| Size of tumor (cm) | ||
| 0–2.9 | 176 | 33.8 |
| ≥3 | 133 | 25.6 |
| Unknown | 211 | 40.6 |
| Grade | ||
| Well-differentiated | 48 | 9.3 |
| Moderately differentiated | 3 | 0.6 |
| Poorly differentiated | 2 | 0.4 |
| Undifferentiated | 463 | 89.7 |
| Treatment* | ||
| No | 19 | 3.7 |
| Yes | 501 | 96.3 |
| Surgerya | ||
| No definitive treatment | 47 | 9.0 |
| Parathyroidectomy | 408 | 78.5 |
| En bloc radical resection | 48 | 9.2 |
| Other | 17 | 3.3 |
| Radiation | ||
| No | 475 | 91.3 |
| Yes | 45 | 8.7 |
*
Nineteen patients received no surgical, chemotherapy, or radiotherapy
a
Patients who did not undergo surgical resection were diagnosed by polypectomy, biopsy, or autopsy at death