Background: Pulmonary artery aneurysm (PAA) is an unusual finding and its association with left main coronary (LMCA) compression is even more infrequent. Cardiac CT evaluates of presence and size of PAA and the degree of LMCA compression. The aim of this study is to describe two cases of adults with compression of LMCA with PAA associated with PDA and pulmonary hypertension. Case presentation: The first case is a 27-year-old man with PAA (78 mm diameter) and LMCA compression of 70% between the aortic sinus and the PAA. He presented angina as a manifestation of the LMCA compression. During follow-up the patient died. The second case is a 28-year-old man with PAA (110 mm diameter) that compresses LMCA in 55%, he rejected surgical treatment, but he is in close follow-up with medical treatment. Conclusion: Cardiac computed tomography played an important role both in the diagnosis and identification of high-risk PAA patients.

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Left ventricular non compaction (LVNC) is a condition rarely diagnosed and reported in current literature. It affects approximately 8 to 12 per 1 million of individuals and its causes are not well understood, but they are linked to gene mutations. The authors present a 29-year-old male who came to medical consult for a pre surgical evaluation. He was completely asymptomatic. Due to an aortic diastolic murmur we performed a transthoracic echocardiogram which revealed severe aortic regurgitation, signs of left ventricular non compaction and coarctation of the aorta. Subsequently, we decided to send him for a CT scan and CMR that allowed to confirm our diagnosis and gave more support to our findings. We´re aimed to report this case because LVNC was found in a patient without symptoms but with a murmur missed in previous medical evaluations. Then, we encourage to be very accurate in patient' s examination and use non-invasive methods properly in order to identify such important cases.

Guía de práctica clínica para la evaluación y el tratamiento de pacientes con estenosis aórtica severa en el Seguro Social del Perú