Bellator star Cris Lencioni is starting to show signs of improvement after suffering cardiac arrest earlier this month ... but despite the positive update, there are many uncertainties surrounding his future.
Lencioni's wife, Marca, told MMA Fighting doctors believe the heart attack may have been caused by Long QT syndrome (a heart rhythm disorder that can be fatal) ... and an MRI revealed the fighter suffered brain damage as a result of the terrifying incident.
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Lencioni is out of the ICU, but remains in the hospital .