Table 1: Reported primary brain collision tumors in the literature.

Author (year) referenceHistological type of collision tumor

Tajika et al. (1989) [11]Intrasellar gangliocytoma and pituitary adenoma

Kitaoka et al. (1986) [8]Posterior fossa epidermoid tumor and trigeminal neuroma

Vaquero et al. (1990) [2] 
Dario et al. (1995) [3]  
Hakan et al. (1998) [4]  
Mitsos et al. (2009) [6]  
Prayson et al. (2002) [5]  
Khalatbari et al. (2011) [7]
Meningioma and astrocytoma (including glioblastoma)

Suh et al. (2003) [22]Suprasellar chordoid glioma and Rathke’s cleft cyst

Johnson et al. (2001) [23]Oligodendroglioma and ganglioglioma

Perry et al. (2001) [24]Oligodendroglioma and pleomorphic xanthoastrocytoma

Muzumdar et al. (2001) [25]Pontine glioma and epidermoid tumor

Vajtai et al. (1997) [26]  
Evans et al. (2000) [27]
Pleomorphic xanthoastrocytoma and ganglioglioma

Goodman et al. (1991) [9]  
Kleinpeter and Koos (1994) [10]
Acoustic schwannoma and epidermoid cyst

Basil et al. (2011) [28]Primary CNS B-cell lymphoma and anaplastic astrocytoma

Jin et al. (2013) [1]  
(review of 14 cases)
Pituitary adenoma and craniopharyngioma

Woo et al. (2014) [29]Central neurocytoma and epidermoid tumor

Current caseTrigeminal nerve sheath tumor and anaplastic astrocytoma