MRI of the ‘Tiger’: a case series

These two cases of 'sawtooth CMP' illustrate a varying clinical picture from asymptomatic with normal ventricular function to dilated CMP with severely impaired systolic function. Reviewing current literature, we found several other case reports on sawtooth CMP. Sawtooth CMP was associated with various clinical sequelae including ventricular dysfunction, arrhythmias, and stroke. Non-invasive cardiovascular imaging was essential in their diagnostic work-up. The morphologic findings have been suggested to be different from established criteria to diagnose hypertrophic CMP or left ventricular non-compaction. The long-term prognostic implications are currently unknown.