Table 1. Characteristics of Patients with Umbilical Basal Cell Carcinoma.

Abbreviations: AA = African-American; BCC = basal cell carcinoma; BCNS = basal cell nevus syndrome; Bx = biopsy; Ca = Caucasian; CID = cutaneous immunocompromised district; Clin = clinical diagnosis; Cm = centimeter; CO₂ = carbon dioxide; CR = current report; Dx = diagnosis; FeP = fibroepithelioma of Pinkus; F/U = follow-up; Hx = history; LA = laser ablation; MMS = Mohs micrographic surgery; Mos = months; Path = pathologic diagnosis; PS = prior scar; NR = no recurrence; NS = not stated; Ref = reference; SCC = squamous cell carcinoma; TP - treatment pending; UP = ultrapulse

^aThe patient had an epidermal inclusion cyst at the site of the tumor.

^bTwo independent umbilical FeP tumors arose in one patient. They shared similar features except that one of the tumors was pigmented.

^cThe patient had a ventral hernia repair at the site.

^dThe patient had a scar from a prior laparoscopic port at the site.

Case	Age, Race, Sex	Risk and/or related factor	Present before dx (mos.)	Pigment	Histologic type	Size (cm)	Treatment	F/U (mos., result)	Ref
1	21 M	NS	NS	NS	Nodular	NS	Surgery	48, NR	7
2	48 M	BCNS	NS	NS	Nodular, Superficial	6.5x4.5	Surgery, UP CO2 LA	15, NR	8
3	52 M	CIDa	NS	Path	Pigmented, Superficial	NS	Surgery	NS	9
4	54 M	NS	12	Clin	Nodular	4.0x3.0	Surgery	52, NR	10
5b	83 M	Hx SCC, BCC	84	Clin, Path	FeP, Pigmented,	0.1x0.1	NS	NS	11
6	27 Ca F	NS	24	NS	Nodular	0.4	Surgery	NS	12
7	43 F	NS	240	NS	Superficial	2.7x1.5	MMS	NS	13
8	50 AA F	BCNS, PSc	36	Clin, Path	Nodular, Pigmented,	3.0x1.5	Surgery	TP	CR
9	54 F	PSd	24	NS	Nodular	2.5	Surgery	12, NR	14
10	67 F	NS	3	Clin	FeP	NS	Surgery	NS	15
11	68 F	NS	6	Clin	Nodular	1.8x1.5	Surgery	24, NR	10
12	71 F	NS	NS	NS	NS	NS	Surgery	NS	16
13	75 F	NS	12	NS	NS	NS	Surgery	NS	17
14	76 F	NS	NS	NS	NS	NS	Surgery	NS	9
15	80 Ca F	NS	24	Clin	Nodular	2.0x1.8	MMS, radiation	NS	18
16	94 F	NS	12	Clin	Nodular	2.0x2.0	Surgery	12, NR	10