Table 1.

Patient treatment and outcome in all cases and case series published in the English literature

Study	Previous mastoidectomy	Treatment	Survival
Ferlito et al. [3]	n/a	n/a	n/a
Pleat et al. [16]	Yes	Surgery	2 months to DSD
Woodson et al. [17]	No	Surgery + xrt	n/a
Proops et al. [18]	Yes	Surgery + chemoxrt	18 months follow-up
Edelstein et al. [19]	No	Surgery	10 year follow-up
	No	Surgery	5 year follow-up
	No	Surgery	4 year follow-up
	Yes	Surgery + chemoxrt	11 months to DSD
	Yes	Surgery + chemo	1 year to DSD
Diengdoh et al. [20]	No	Surgery	6 months to DSD
Farrell and Dowe [21]	Yes	Surgery + xrt	8 months to DSD
Hagiwara et al. [22]	n/a	n/a	n/a
Aydogan et al. [23]	Yes	Surgery	26 months follow-up
Kletzker et al. [24]	Yes	Surgery	3 years follow-up

Previous mastoidectomy on the side of the verrucous carcinoma, treatment modality, and length of survival or time to disease-specific death after treatment were recorded

N/a studies without available information, DSD disease-specific death