Research Article
Epidemiology and Survival Outcomes for Eyelid Primary Malignant Melanoma: An Analysis of 1397 Cases in the SEER Database
Table 1
Demographic and clinicopathological characteristics of patients with eyelid PMM, 1975–2016.
| Characteristic | N | % |
| Total | 1397 | 100 |
| Age at diagnosis, y | 0–39 | 94 | 6.7 | 40–59 | 309 | 22.1 | 60–79 | 596 | 42.7 | 80+ | 398 | 28.5 |
| Gender | Male | 740 | 53.0 | Female | 657 | 47.0 |
| Race | White | 1335 | 95.6 | Black | 4 | 0.3 | Asian or pacific islander | 14 | 1.0 | American Indian/Alaska native | 5 | 0.3 | Unknown | 39 | 2.8 |
| Ethnicity | Hispanic | 83 | 5.9 | Non-Hispanic | 1314 | 94.1 |
| Laterality | Left | 727 | 52.1 | Right | 646 | 46.2 | Bilateral | 9 | 0.6 | Side unspecified | 15 | 1.1 |
| Histologic subtype | 8720/3: Malignant melanoma, NOS | 668 | 47.8 | 8742/3: LMM | 287 | 20.5 | 8743/3: SSM | 260 | 18.6 | 8721/3: NM | 102 | 7.3 | 8745/3: Desmoplastic melanoma | 28 | 2.0 | 8772/3: Spindle cell melanoma, NOS | 22 | 1.6 | 8730/3: Amelanotic melanoma | 12 | 0.9 | 8771/3: Epithelioid cell melanoma | 7 | 0.5 | 8740/3: Malignant melanoma in junctional nevus | 2 | 0.1 | 8744/3: Acral lentiginous melanoma | 2 | 0.1 | 8770/3: Mixed epithelioid and spindle cell melanoma | 2 | 0.1 | 8722/3: Balloon cell melanoma | 1 | 0.1 | 8723/3: Malignant melanoma, regressing | 1 | 0.1 | 8741/3: Malignant melanoma in precancerous melanosis | 1 | 0.1 | 8761/3: Malignant melanoma in giant pigmented nevus | 1 | 0.1 | 8773/3: Spindle cell melanoma, type A | 1 | 0.1 |
| AJCC stage | I | 482 | 34.5 | II | 112 | 8.0 | III | 19 | 1.4 | IV | 15 | 1.1 | Unknown | 769 | 55.0 |
| Stage at diagnosis | Localized | 1085 | 77.7 | Regional | 98 | 7.0 | Distant | 32 | 2.3 | Unknown | 182 | 13.0 |
| Metastasis at diagnosis | None | 398 | 28.5 | Distant | 10 | 0.7 | Unknown | 989 | 70.8 |
| Surgery | Yes | 1301 | 93.1 | No | 96 | 6.9 |
| Radiation Chemotherapy | Yes | 43 | 3.1 | No | 1354 | 96.9 |
| Chemotherapy | Yes | 14 | 1.0 | No | 1383 | 99.0 |
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PMM, primary malignant melanoma; NOS, not otherwise specified; LMM, lentigo malignant melanoma; SSM, superficial spreading melanoma; NM, nodular melanoma; AJCC, American Joint Committee on Cancer.
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