- Postoperative Imaging Findings following Sigmoid Sinus Wall Reconstruction for Pulse Synchronous Tinnitus
Transmastoid sigmoid sinus wall reconstruction (SSWR) is a surgical technique used for the treatment of pulsatile tinnitus arising from sigmoid sinus wall anomalies. In 13 patients, CT and MR imaging examinations were assessed for the characteristics of the materials used for reconstruction, the impact of these on the adjacent sigmoid sinus, and complications. The various materials used for reconstruction (NeuroAlloderm, HydroSet, bone pate) showed characteristic imaging appearances and could be consistently identified. In 5/13 patients, there was extrinsic compression of the sigmoid sinus by graft material. Dural sinus thrombosis occurred in 2 patients. Symptoms requiring postoperative imaging after SSWR include headaches, visual disturbances, and persistent or recurrent tinnitus.
- Accuracy of Preoperative Imaging in Detecting Nodal Extracapsular Spread in Oral Cavity Squamous Cell Carcinoma
A group of 111 consecutive patients with untreated oral cavity squamous cell carcinoma and available preoperative imaging and subsequent lymph node dissection was studied. Twenty nine subjects had radiographically determined extracapsular spread. Imaging sensitivity and specificity for extracapsular spread were 68% and 88%, respectively. Necrosis, irregular borders, and gross invasion were independently correlated with pathologically proved extracapsular spread.
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