I have sarcoidosis of the lungs but i'm having heart palps already had mri my heart was fine but still having heart palps could mri miss cardiac sarc?

Possible for MRI : Would miss it. Sarcoidosis is a strange illness that can affect the heart and lungs. Most common us congestive heart failure but atrial fibrillation is also a complication and could be felt as palpitations and would not show up on the mri. Has your doctor checked for this with an event recorder or holter? Just a thought. MRI looks for structural things. I'm thinking more electrical.

Unlikely: As cardiac MRI is basically the gold standard, next to a biopsy, it would be rather unlikely - though not impossible. Have you had a monitor to assess what your palpitations actual represent? There are many reasons for have palpitations, in fact many people have palpitations without any concerning primary heart disease.

Sarcoid: There are many causes of palpitations. Sarcoid in the lung could potentially cause them without heart involvement. MRI can miss sarcoid in the heart and even biopsy isn't 100%. You could have palps without having any sarcoid so delineating a cause may be difficult. I'd advise having a discussion regarding your concerns with your Doc.