title: Isolated papillary muscle hypertrophy: A gap in our knowledge of hypertrophic cardiomyopathy?
abstract: Increased thickness of left ventricular walls is the predominant characteristic and one of the diagnostic criteria of hypertrophic cardiomyopathy (HCM). This case illustrates an uncommon but important finding of isolated hypertrophy of the papillary muscles (PMs), observed in a young woman in whom an abnormal electrocardiogram was initially detected. During the investigation isolated PM hypertrophy was identified. The structural characteristics of the PMs have received scant attention in this setting and there is little information in the literature on this entity, whose real prevalence and clinical significance remain to be determined. The available information relates solitary PM hypertrophy with an early form or a different pattern of HCM. In this case PM hypertrophy was only detected due to the finding of an abnormal electrocardiogram, which prompted further diagnostic tests and a search for possible etiologies.
authors.affiliation: Cardiology Department, CHTMAD, S. Pedro Hospital, Vila Real, Portugal; Investigation Centre on Health Sciences, Beira Interior University, Covilhã, Portugal. Electronic address: catferreirinha@net.sapo.pt.
authors.forename: Catarina
authors.initials: C
authors.lastname: Ferreira
authors.affiliation: Radiology Department, Povisa Hospital, Vigo, Spain.
authors.forename: Carlos
authors.initials: C
authors.lastname: Delgado
authors.affiliation: Cardiology Department, Povisa Hospital, Vigo, Spain.
authors.forename: María
authors.initials: M
authors.lastname: Vázquez
authors.affiliation: Radiology Department, Povisa Hospital, Vigo, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Trinidad
authors.affiliation: Cardiology Department, Povisa Hospital, Vigo, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Vilar
mesh_terms: D002312:Cardiomyopathy, Hypertrophic / Q000473:pathology*; D005260:Female; D006801:Humans; D006984:Hypertrophy; D008279:Magnetic Resonance Imaging; D010210:Papillary Muscles / Q000473:pathology*; D055815:Young Adult
keywords: Cardiac magnetic resonance; Echocardiography; Ecocardiografia; Electrocardiogram; Eletrocardiograma; Hipertrofia dos músculos papilares; Hypertrophic cardiomyopathy; Miocardiopatia hipertrófica; Papillary muscle hypertrophy; Ressonância magnética cardíaca