A 55-year-old woman presents to her physician after several episodes of syncope.

Discussion in 'Plab 1 and 2 forum' started by Neha Gupta, Jun 2, 2013.

  1. Neha Gupta

    Neha Gupta Active Member

    A 55-year-old woman presents to her physician after several episodes of syncope. Physical examination is remarkable for a low-pitched

    a) Benign glandular tissue

    b) Densely packed smooth muscle

    c) Densely packed striated muscle

    d) Malignant glandular tissue

    e) Scattered mesenchymal cells in a myxoid background
  2. The most common primary cardiac tumor of adults is atrial myxoma, which typically occurs as a single lesion in the left atrium that may intermittently obstruct the mitral valve. Histologically, these tumors are composed of scattered mesenchymal cells in a prominent myxoid background. Benign glandular tissue (choice A) suggests an adenoma, which is not usually found in the heart. Densely packed smooth muscle (choice B) suggests a leiomyoma, which is not usually found in the heart. Densely packed striated muscle (choice C) suggests rhabdomyoma, which is the most common primary cardiac tumor in children, not adults. Malignant glandular tissue (choice D) suggests carcinoma, which can be metastatic to the heart, but does not usually cause a ball-valve obstruction.

Share This Page