Hipertrofia lipídica do septo interatrial: relato de casos e revisão da literatura

Relato de dois casos clinicos recentemente acompanhados no Johns Hopkins Hospital: ambos com diagnostico de hipertrofia lipomatosa (HL) do septo interatrial (SIA), sem apresentarem sintomas associados a essa patologia. O primeiro caso relata um paciente que teve indicacao de tomografia atrial direita ao ecocardiograma, enquanto no segundo paciente, o exame foi feito para diagnostico diferencial de dor no braco esquerdo aos esforcos. Normalmente a HL do SIA e um achado incidental implicacao clinica, tendo importância no diagnostico diferencial com outras massas cardiacas. Geralmente nao tem indicacao de tratamento e sua relacao com patologias que promovem acumulo de gordura corporea ainda nao e bem estabelecida. Case study of two patients recently evaluated at our institution and diagnosed with asymptomatic lipomatoushypertrophy of the interatrial septum. The first case is a patient referred for cardiac CT for differential diagnosis ofa mass in the right atrium detected by echocardiography; the second patient was referred for differential diagnosisof left arm pain induced by exercise. Lipomatous hypertrophy of the interatrial septum is usually anincidental finding with no clinical implications which is important for differential diagnosis with other cardiacmasses. Surgical treatment is usually not warranted and its links to pathologies that build up body fat is still not fully understood.