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

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.