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Ashen tubercle

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Ashen tubercle --> tuberculum cinereum

a longitudinal prominence on the dorsolateral surface of the medulla oblongata along the lateral border of the tuberculum cuneatum; it is the surface profile of the spinal tract of trigeminal nerve, continuous caudally with the dorsolateral fasciculus (Lissauer's tract).

Synonym: ashen tubercle, gray tubercle, rolandos tubercle.