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  • Title: Diagnosis and Outcomes of 341 Patients with Cushing's Disease Following Transsphenoid Surgery: A Single-Center Experience.
    Author: Feng M, Liu Z, Liu X, Bao X, Yao Y, Deng K, Xing B, Lian W, Zhu H, Lu L, Wang R.
    Journal: World Neurosurg; 2018 Jan; 109():e75-e80. PubMed ID: 28951275.
    Abstract:
    BACKGROUND: Transsphenoid surgery (TSS) is a standard treatment modality for Cushing's disease (CD). However, postoperative remission and recurrence rates vary among studies. Here we analyze the diagnosis and outcomes of 341 patients with a preoperative diagnosis of CD undergoing TSS in a single center over a 3-year period. METHODS: A total of 341 patients were enrolled. Clinical manifestations, imaging results, laboratory workups, and results of inferior petrosal sinus sampling (IPSS) were obtained. Outcomes were obtained with a follow-up length from 12 to 36 months. RESULTS: The tumors were mainly of Knosp level 0 (68.57%). The sensitivity of MRI, combined low-dose and high-dose dexamethasone suppression test and IPSS in the diagnosis were 90.83%, 88.53% and 95.57%. The concordance of lateralization by MRI and by IPSS were 78.96% and 61.34% compared with surgery. 2. OUTCOMES: The overall remission rate was 78.89% (N = 289). Patients undergoing the first TSS (N = 234) had a remission rate of 86.36% for macroadenomas (N = 22) and 83.2% for microadenomas (N = 212). Patients undergoing a second TSS (N = 55) had lower rate of remission of 50.00% for macroadenomas (N = 6) and 61.22% for microadenomas (N = 49). For patients with invasive tumors, the overall remission rate was 26.92% (N = 26), 20.0% for macroadenomas (n = 20) and 50.0% for microadenomas (N = 6). The recurrence rate was 2.42%. CONCLUSIONS: Pituitary imaging, endocrinological workups and IPSS are sensitive and specific diagnostic modalities for CD, but the lateralization efficacy of MRI and IPSS are unsatisfactory. A higher rate of remission relies on gross resections of tumors.
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