PMC4677181_01
(a) Coronal image of preoperative MRI shows the tumor with cystic lesion on the left middle cerebellar peduncle (arrow). (b) Operative position was right lateral-semiprone position with chin down. (c) The right arm of the patient was placed in front of the neck to the left side and gently supported. (d) An illustrative diagram of the operative posture. Right submandibular lesion was caused by pressure being exerted on the face by this extreme positioning.
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fig1
Operative position was right lateral-semiprone position with chin down (Figure 1).
Axial (a) and coronal (b) images of computed tomography 1 hour after operation showing swelling of the right submandibular gland and the associated edematous tissue (arrow).
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No evidence of sialolithiasis was discovered (Figure 2).
(a) Swelling of the right submandibular lesion (arrow) at 7 hours after operation. (b) Two days after operation, swelling of the submandibular lesion is still apparent. (c) The glandular swelling had almost disappeared by the fifth postoperative day.
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7 hrs after operation, the swelling worsened and the patient started complaining of mild respiratory distress, although peripheral oxygen saturation (SpO2) was 100% and his vital signs were normal (Figure 3).
(a) Axial image of computed tomography 7 hours after operation. Edematous tissue around the right submandibular gland (arrow) was found to have increased, and it extended to the right parotid region. (b) Coronal image of computed tomography 7 hours after operation. The glandular swelling was found to be displacing the larynx (arrow).
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Glandular swelling was found to be displacing the larynx (Figure 4).