Hypokalemic periodic paralysis one of the channelopathy disorders with low serum potassium level, clinically presenting as acute onset extremity weakness. In most cases, the cause of the hypokalemia is familial, but rarely hypokalemic periodic paralysis occurs secondary to other diseases including endocrinopathies, renal disorders, gastrointestinal loss. We report a patient with no known underlying diseases, who were diagnosed with sporadic hypokalemic periodic paralysis accompanied by neurogenic diabetes insipidus.

Purpose: To evaluate the prognostic value of the pretreatment maximum standardized uptake value (SUVmax) for locoregional control (LRC) of early glottic cancer treated with primary radiotherapy. Materials and Methods: We retrospectively reviewed the medical records of 101 patients with T1-T2N0 glottic cancer treated with helical tomotherapy between 2013 and 2016. The clinical T-stages were T1 in 87 (86.1%) and T2 in 14 (13.9%) patients. The median total dose was 63 Gy (63–67.5 Gy) in 2.25 Gy per fraction. The survival outcomes were plotted using Kaplan-Meier curves. Receiver operating characteristic curves were used to assess the optimal SUVmax cut-off value for predicting locoregional recurrence. Results: The median follow-up period was 58 months (range, 11 to 90 months). The 5-year overall survival (OS) and locoregional recurrence-free survival rates were 96.8% and 85.4%, respectively. The median pretreatment SUVmax of the primary tumor for all 101 patients was 2.3 (range, 1.1 to 9.1). The best cut-off value for SUVmax for predicting LRC was 3.3, with a sensitivity of 78.6% and specificity of 73.6%. Univariate analysis showed that T-stage, overall treatment time (≥43 days), and high SUVmax (≥3.3) were significant predictors of LRC. Multivariate analysis showed that LRC was independently affected by a high SUVmax (≥3.3) (hazard ratio = 5.505, p = 0.020). Conclusion High pretreatment SUVmax (≥3.3) is a negative prognostic factor for LRC in early glottic cancer patients treated with primary radiotherapy.

Hypokalemic periodic paralysis one of the channelopathy disorders with low serum potassium level, clinically presenting as acute onset extremity weakness. In most cases, the cause of the hypokalemia is familial, but rarely hypokalemic periodic paralysis occurs secondary to other diseases including endocrinopathies, renal disorders, gastrointestinal loss. We report a patient with no known underlying diseases, who were diagnosed with sporadic hypokalemic periodic paralysis accompanied by neurogenic diabetes insipidus.