Table 1.

Type-IV second BCC cases reported in the world literature (since 1989).

Study (year)	Number of cases	Age (y), sex	Surgical approach	Complications
Takimoto et al. [12] (1989)	1	14, M	Transoral
Dilkes et al. [13] (1990)	1	42, M	Tonsillectomy then transoral
Gatot et al. [14] (1991)	2	27, M 19, M	Transcervical	XII CN palsy on presentation
Ruscito et al. [15] (1993)	1	27, F	Transoral
Thaler et al. [16] (1993)	2	3 months, M 3, M	Transoral Transcervical
Durrant et al. [17] (1994)	1	20, F	Transcervical	IX, X & XII CN palsies on presentation
Günerí et al. [18] (1994)	2	30, F 53, M	Transcervical/transparotid Transoral
Papay et al. [19] (1994)	1	29, M	Transcervical/transparotid	Horner's syndrome, X & XII CN paresis PO
Chabot et al. [20] (1996)	2	22, F 17, F	Transoral Transcervical
Paczona et al. [21] (1998)	2	38, F 34, M	Transoral Transcervical
Bilgen et al. [22] (2001)	1	65, M	Transcervical
Shin et al. [23] (2001)	1	35, F	Transcervical	IX, X & XII CN palsies on presentation
Choo et al. [24] (2002)	1	2, F	Not mentioned
Gallego Aranda et al. [25] (2002)	1	34, M	Transcervical
Dernis et al. [26] (2004)	1	29, M	Transcervical
Ghosh et al. [27] (2006)	1	8, F	Combined transcervical/transoral
Díaz-Manzano et al. [28] (2008)	1	40, M	Transoral
Piccin et al. [10] (2008)	1	48, M	Combined transcervical/transmandibular
Saussez et al. [29] (2009)	1	54, M	Transoral
Vidhyadharan et al. [30] (2012)	1	56, M	Transoral robotic
Gupta & Gupta. [9] (2013)	1	35, F	Transcervical
Jung et al. [31] (2016)	3	51, M 57, F 46, M	Transoral ± tonsillectomy
Howlett et al. [11] (2018)	1	70, M	Transoral + tonsillectomy
Magdy et al. (2020) “present case”	1	26, F	Transoral
Total	31	Age: range: 3 months–70 years (mean: 33.3 ± 18 years) Sex: M = 19/F = 12 (M: F ratio = 1.6 : 1)

Abbreviations: Y, years; M, male; CN, cranial nerve; F, female; PO, postoperative.