Epidemiological, clinical and oncological outcomes of laryngeal verrucous carcinomas: a systematic review

Table 1 Included studies

References	Countries	Center	Year	Design	EL	N	Treatments
Burns et al. [12]	Canada	Toronto	1976	Retrospective	IV	18	Surgery and RT
Ferlito and Recher [26]	Italy	Padua	1980	Retrospective	IV	77	Surgery and RT
Blakeslee et al. [14]	U.S.A	Boston	1984	Prospective	III	12	Surgery
Lundgren et al. [8]	Canada	Toronto	1986	Retrospective	IV	44	Surgery and RT
Sllamniky et al. [15]	U.S.A	St Louis	1989	Retrospective	IV	15	Surgery
Hagen et al. [16]	U.S.A	New Orleans	1993	Retrospective	IV	12	Surgery and RT
Fliss et al. [17]	Canada	Toronto	1994	Retrospective	IV	29	Surgery and RT
Longarela Herrero et al. [18]	Spain	Santader	1995	Retrospective	IV	11	Surgery
Maurizi et al. [19]	Italy	Rome	1996	Retrospective	IV	31	Surgery and RT
Damm et al. [20]	Germany	Cologne	1997	Retrospective	IV	21	Surgery
McCaffrey et al. [21]	U.S.A	Rochester	1998	Retrospective	IV	52	Surgery and RT
Strojan et al. [22]	Slovenia	National database	2006	Retrospective	IV	30	Surgery, RT and CT
Hod et al. [23]	Israel	Tel Aviv	2009	Retrospective	IV	18	Surgery and RT
Huang et al. [24]	Canada	Toronto	2009	Retrospective	IV	62	RT
Dubal et al. [3]	U.S.A	SEER	2015	Retrospective	IV	516	Surgery and RT
Jayakrishnan et al. [25]	U.S.A	NCDB	2020	Retrospective	IV	396	Surgery and RT

CR chemotherapy, NCDB National Cancer Database, RT radiotherapy, SEER surveillance, epidemiology, and end results

ISSN: 1916-0216