Extreme hypertrophy of the left atrial appendage

The case of the giant dog ear
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      • 1.
        1. We have described the case of a fortyseven year old male patient with a huge left atrial appendage herniated through a pericardial defect. This mass was 11 cm. long and was, very probably, the site of an electrical signal. Electrocardiographic evidence of this was best demonstrated by P wave and P-R interval alterations in leads III, aVL and aVF.
      • 2.
        2. Following surgical excision, the peculiarities seen in the preoperative electrocardiogram disappeared.
      • 3.
        3. This is the first reported instance of such an abnormality which was visualized by angiocardiography and corrected by resection.
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