U.S. doctors online nowAsk doctors free
A member asked:

Had a mri of the braincan you tell me what it mean by the cerebellar tonsils are seen to extend 2mm caudal to the foramen magnum, compatible with mild ?

1 doctor answer2 doctors weighed in
Dr. Edward Smith
Neurosurgery 54 years experience
Location, location!: Cerebellar tonsils (not to be confused with lingual tonsils in the throat) are at the lower end of the cerebellum and are close to the rim of the opening at the base of skull (foramen magnum = big hole). If the f.M. Isn't big enough & tonsils protrude thru it, not enough space for brainstem may be present, causing compressive symptoms. Also CSF (spinal fluid) may not drain properly-->headaches etc.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Sep 13, 2019

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.