FIGURE LEGENDS
Figure 1 . Preoperative findings. (A) The damage of attic was
observed by otoscope. There is a deep pocket in the right ear slack
(arrow). White cholesteatoma in the left ear in front of the malleus
(arrow). (B) In the coronal HRCT temporal bone scan (arrow), the
Prussian space has lobulated soft tissue, and the middle small bone is
displaced, which erodes the attic of scutum (*) (arrow). (C)Pure tone
audiogram. 90% of patients with cholesteatoma have symptoms of
conductive hearing loss caused by erosion of auditory bone.
Figure 2. A patient with intermittent otorrhea and earache was
treated by microsurgery. (A) attic damage occurs when the left tympanic
membrane is examined before operation. (B) The tympanic membrane became
clear in the attic area after postoperative examination. (C)
cholesteatoma matrix (f, facial nerve; P, Cape; In the 1980 s, stapes
were completely removed. (d) Implant cartilage (arrow) when rebuilding
attic area.
Figure 3. One patient experienced hearing loss and intermittent
otorrhea. Endoscope was used to treat attic cholesteatoma. (A) The attic
was found damaged during the preoperative examination. (B) The attic was
found to be clean after the operation. (C) After gastrectomy, white
cholesteatoma was found by endoscope (arrow). (D) Reconstruction of
attic with cartilage after removal of cholesteatoma (arrow).
Figure 4. The visibility index of middle ear structure (MESVI)
after endoscopic and microscopic gastric wall incision
Figure 5. Postoperative manifestations-after endoscopic and
microscopic pubic symptomy.
Figure 6. Long-term results of 1-year postoperative follow-up
Supplement figure 1. Middle ear structure visibility index
(MESVI). (A) Observation results of middle ear structure under 0
endoscope. (B)With some important anatomical signs (public relations:
Cape, Jacobson nerve, hy: hypotympanum, fi: finiculus, SST:
SUPTYMPANICSE: styloid process bulge, pe: pyramidal bulge, saint: stapes
tendon, isj: incudostapedial joint, fn: face) Sp: short process, nurse:
malleus neck, ttm: tensor timulus muscle, ttf: tensor timulus fold, ica:
internal carotid artery, cp: cochleariform process, lsc: lateral
semicircular canal, safety factor: stapes foot) was used as the MESVI
10-point scoring system.