Benign esophageal tumors are rare. Reports by most authors refer to a single case found in a routine esophageal examination. 1-3 One third of these lesions are polyps, and myomas are the second most frequent tumor diagnosed. Fibrolipoma has been found in a few and usually becomes large before symptoms occur. Death by regurgitation of this tumor and obstruction of the upper airway has been reported. 4 Other serious problems may occur such as malignant degeneration of the distal end of the tumor, anemia, and melena.
Histological analysis of the human vocal folds, focused particularly on the lamina propria of the vocal muscle of fetuses, infants, and adults in horizontal laryngeal sections, allowed us to show the differences in morphology and composition according to the laryngeal development. Our results indicate that the origin of the vocal fold is independent of the origin of the other portions of the larynx, and the influence of the zone known as macula flava in the maturation of the vocal fold is an age-related process.
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