“…While the name “porcelain atrium” refers to the LA calcification that involves the LA appendage, free wall, and mitral valve apparatus, but spares the IAS, 3 the term “coconut atrium” is reserved for the involvement of the entire LA circumference. 1 Whether there are different pathophysiological mechanisms implied in the involvement or sparing of the IAS is still uncertain. Importantly, when this structure is affected, as in the presented case, it represents a major obstacle for surgical and interventional procedures.…”