Neuromuscular choristoma (NMC) is an uncommon tumor that usually involves a large nerve trunk. Only 28 cases of NMC have been previously reported in the English-language literature, 17 of which involved cranial nerves. We report a new case of intracranial NMC that arose from a facial nerve at the cerebellopontine angle in a 44-year-old man. The patient was taken to surgery, where the lesion was found to involve the right facial nerve. The tumor was partially removed, and at the 2-year follow-up, the patient showed no sign of recurrence.
References
1.
OrlandiE.[A case of rhabdomyoma of the sciatic nerve]. Arch Sci Med1895;19:113–37.
2.
LouhimoI, RapolaJ.Intraneural muscular hamartoma: Report of two cases in small children. J Pediatr Surg1972;7:696–9.
3.
MarkelSF, EnzingerFM. Neuromuscular hamartoma—a benign “triton tumor” composed of mature neural and striated muscle elements. Cancer1982;49:140–4.
4.
BonneauR, BrochuP.Neuromuscular choristoma. A clinicopathologic study of two cases. Am J Surg Pathol1983;7:521–8.
ZwickDL, LivingstonK, ClappL, Intracranial trigeminal nerve rhabdomyoma/choristoma in a child: A case report and discussion of possible histogenesis. Hum Pathol1989;20:390–2.
7.
O'ConnellJX, RosenbergAE. Multiple cutaneous neuromuscular choristomas. Report of a case and review of the literature. Am J Surg Pathol1990;14:93–6.
8.
BomanF, PalauC, FloquetA, Neuromuscular hamartoma. Ann Pathol1991;11:36–41.
9.
ChaponF, HubertP, MandardJC, [Spinal lipoma associated with neuromuscular hamartoma: Report of one case]. Ann Pathol1991;11:345–8.
10.
AwasthiD, KlineDG, BeckmanEN. Neuromuscular hamartoma (benign “triton” tumor) of the brachial plexus. Case report. J Neurosurg1991;75:795–7.
11.
VandewalleG, BrucherJM, MichotteA.Intracranial facial nerve rhabdomyoma. Case report. J Neurosurg1995;83:919–22.
12.
MitchellA, ScheithauerBW, OstertagH, Neuromuscular choristoma. Am J Clin Pathol1995;103:460–5.
13.
SmithMM, ThompsonJE, ThomasD, Choristomas of the seventh and eighth cranial nerves. AJNR Am J Neuroradiol1997;18:327–9.
14.
GianniniC, ReynoldsC, LeavittJA, Choristoma of the optic nerve: Case report. Neurosurgery2002;50:1125–8.
15.
OeppenRS, HardenSP, ArgentJD. Neuromuscular hamartoma: Imaging features of a rare paediatric craniofacial tumour. Pediatr Radiol2003;33:50–2.
16.
WuSS, LoWW, TschirhartDL, Lipochoristomas (lipomatous tumors) of the acoustic nerve. Arch Pathol Lab Med2003;127:1475–9.
AzzopardiJG, EusebiV, TisonV, BettsCM. Neurofibroma with rhabdomyomatous differentiation: Benign “Triton” tumour of the vagina. Histopathology1983;7:561–72.
19.
WestonJA. The migration and differentiation of neural crest cells. In: AbercrombieM, BrachetJ, eds. Advances in Morphogenesis. Vol. 8. New York: Academic Press, 1970:41–114.
20.
ZamaniAA. Cerebellopontine angle tumors: Role of magnetic resonance imaging. Top Magn Reson Imaging2000;11:98–107.
21.
LalwaniAK. Meningiomas, epidermoids, and other nonacoustic tumors of the cerebellopontine angle. Otolaryngol Clin North Am1992;25:707–28.
22.
TruwitCL, BarkovichAJ. Pathogenesis of intracranial lipoma: An MR study in 42 patients. AJR Am J Roentgenol1990;155:855–64.