Hypopharyngeal squamous cell carcinoma bordering ectopic gastric mucosa "inlet patch" of the cervical esophagus.

Objective: Ectopic gastric mucosa of the cervical esophagus, referred to as inlet patch (IP), is considered to be a common development abnormality of the esophagus. We report here a case of hypopharyngeal squamous cell carcinoma bordering on IP of the cervical esophagus.

Methods: A 44-year-old female underwent partial pharyngectomy, total laryngectomy, cervical esophagectomy, and bilateral neck dissection under the diagnosis of hypopharyngeal carcinoma.

Smell intensity monitoring using metal oxide semiconductor odor sensors during intravenous olfaction test.

The intravenous olfaction test using prosultiamine (PST) solution is simple to perform and has been used clinically in Japan. We monitored intranasal intensity of smell continuously in real time under various conditions of administration using metal oxide semiconductor odor sensors and established an optimal PST injection procedure. In this study, we found that 1) although there was fluctuation in the pattern of intensity of increase in smell in the PST original solution test, the pattern of increase in intranasal smell intensity could be stabilized by prolonging the injection time to 40 s and 2) dilution of PST with physiological saline was effective in preventing angialgia during intravenous injection.