A 14-year-old boy presented to the Oncology clinic for follow-up of B-cell acute lymphoblastic leukemia (ALL). Initial diagnosis was 10 months earlier. Clinical course was subsequently complicated by invasive mucormycosis with orbital and intracranial extension requiring a craniotomy and left frontal lobectomy, multiple episodes of polymicrobial sinusitis, a polymicrobial intracranial abscess, and methicillin-sensitive staphylococcus aureus (MSSA) bacteremia. The patient was last hospitalized for a large pericardial effusion requiring pericardiocentesis and was seen four days after his discharge. Echocardiography five days prior showed normal biventricular systolic function, mild mitral and aortic valve regurgitation, and a trivial pericardial effusion.
What is the answer?
Acquired Submitral Aneurysm
Whats the learning point?
Submitral aneurysm can develop as a result of infective endocarditis, due to weakening and dehiscence of the mitral annular region.