Research in Vestibular Science

Case Reports

Multicanal Benign Paroxysmal Positional Vertigo: Concurrent Bilateral Posterior Canalolithiasis and Unilateral Lateral Cupulolithiasis: Seung Won Chung, Chang Hyun Cho, Gyu Cheol Han; Res Vestib Sci. 2009;8(2):142-146.

Abstract PDF: Multicanal BPPV (benign paroxysmal positional vertigo), especially BPPV affecting both labyrinths, is uncommon. A review of the literature revealed that the majority of reported cases of multiple BPPV either involved a combination of two different canals limited to one labyrinth or two different canals in both labyrinths, although one case of multicanal BPPV was reported to involve three canals bilaterally. Here, the authors report a case of bilateral posterior canalolithiasis and unilateral horizontal canal cupulolithiasis in a 54-year-old man, and include a review of the literature.

Bilateral Multiple Benign Paroxysmal Positional Vertigo Combined with Vestibular Neuritis: Seong Jun Choi, You Lee Shin, Yun Tae Kim, Nam Soo Han, Yun Hoon Choung; J Korean Bal Soc. 2006;5(1):81-85.

Abstract PDF: Although classical benign paroxysmal positional vertigo (BPPV) has generally been resolvable by routine manual repositioning maneuvers, nevertheless resistant cases and variant remain a significant problem. Recently, we experienced a case of posterior semicircular canal BPPV combined with changes to various types of BPPV during manual reposition maneuver and vestibular neuritis. We examined her brain MRI due to low response of routine manual reposition maneuvers and frequently recurrence of BPPV. In brain MRI, we found 1.3cm sized mass in hypoglossal canal. It seemed to be neuroma on hypoglossal nerve. A refractory BPPV poses problems of pathophysiogenetic interpretation, differential diagnosis with a CNS lesion and therapeutic strategy. We thought that refractory BPPV should be treated with more frequently examination and manual repositional maneuver and distinguished from CNS lesion. Key Words : Canalolithiasis, Cupulolithiasis, Vestibular neuritis

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