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Table S1
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Figure 1. Typical images of four different histological types of vocal cord polyps. (A-D) Photographic images of four different histological types of vocal cord polyps. (a-d) Representative images of histologic sections of formalin-fixed, paraffin-embedded vocal cord polyps from four different types. Sections were stained with H&E (40 x). The edematous (A) types of polyps was translucent in appearance clinically. H&E staining of a typical tissue showed polyp surface epithelium covered on the surface of edematous stroma with few cells(a). The gelatinous (B) types of polyps appeared as a translucent gel with basophilic mucous material separates the small astrocytes(b). The vascular type of polyps was angiomatous in appearance (C) with dilated blood vessels, granulation tissue and hemorrhage (c). The fibrous type of polyps was grayish color lusterless fibrous protrusion in appearance (D). H&E staining of a typical tissue showed a cellulose-like substance distributed around vascular space with spindle cells (d).
Figure 2. Clinical Photographs of Surgical Procedure for Vocal Fold Polyps with Electronic Flexible Laryngoscope. A. Vocal fold polyp, a bulge with fusiform pale red appearance on the right side. B. The electronic flexible laryngoscope was inserted through the left nostril. The flexible forceps was opened against the base of the vocal fold polyp on the right side. C. The flexible forceps was reached to the right side of the vocal fold polyp along the edge of the vocal folds, and clamped vertically on the vocal fold polyp. D. The electronic flexible laryngoscope was inserted through the right nostril. The flexible forceps was pressed against the surface of the vocal folds to excise a bulge of tissue on the left vocal fold. E. Bleeding was occurred after bilateral vocal fold polyps excision. A flattened surface of vocal folds was visible. F. One month follow-up version of vocal folds. Two bands of smooth vocal fold were visible in the larynx.
Table 1. The Clinical Characteristics of 159 patients of Vocal Cord Polyps with Different Histological Types