https://www.selleckchem.com/pr....oducts/4-phenylbutyr
A 60-year-old man, who diagnosed nasopharyngeal carcinoma staged as T1N1M0 in 2003 and received 68 Gy 30 times intensity modulated radiotherapy for primary tumor, was diagnosed as "cerebrospinal fluid rhinorrhea（left side）; purulent meningitis; nasopharyngeal carcinoma（post-radiotherapy） " in 2017. The patient received an emergency repair of the cerebrospinal fluid leakage by nasal endoscope approach surgery. No rhinorrhea complained in the following 2 years. But two years later, the patient complained a recurrent rh
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