Triangle of Guillain and Mollaret

The triangle of Guillain and Mollaret, also known as dentatorubro-olivary pathway, has three corners 1:

  1. red nucleus
  2. inferior olivary nucleus
  3. contralateral dentate nucleus

Connecting fibres are only identified between the red nucleus and inferior olivary nucleus (central tegmental tract) and between the red nucleus and the to the contralateral dentate nucleus via the superior cerebellar peduncle (rubrodentate fibers) 1

No connecting tract is present between the inferior olivary nucleus and contralateral dentate nucleus 1

Depending on the location of interruption, cerebellar atrophy or hypertrophic olivary degeneration can ensue.

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Article information

rID: 2205
Section: Gamuts
Synonyms or Alternate Spellings:
  • Myoclonic triangle
  • Dentato-rubral-olivary pathway
  • Dentatorubro-olivary pathway

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Cases and figures

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    Figure 1: triangle of Guillain and Mollaret
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