A rare case of an enterochromaffin-like neuroendocrine tumor associated with parietal cell dysfunction treated using endoscopic submucosal dissection.

Most gastric neuroendocrine tumors (NETs) develop from enterochromaffin-like (ECL) cells. ECL-cell NETs are classically categorized into three types according to their etiology. A 50-year-old woman presented with submucosal tumor-like lesions in the stomach, which were identified via esophagogastroduodenoscopy.

[Two cases of chronic upside down stomach with "reverse incarceration" in the abdominal cavity].

Upside down stomach (UDS) is a rare type of hiatal hernia. It is categorized by herniation of either the entire stomach or most of the gastric portion of the stomach into the posterior mediastinum. Acute UDS usually presents with abdominal and thoracic symptoms immediately after the stomach rotates, while chronic UDS often has either mild or no symptoms with the entire stomach rotated in the mediastinum.

[A case of early syphilitic hepatitis with jaundice cured by high-dose amoxicillin and probenecid].

A 44-year-old man was admitted because of general malaise, jaundice, and epigastric pain. The patient had no significant medical history. However, the patient visited a brothel 3 months ago and noticed initial induration on his penis 2 months ago.

[Responsiveness of well-differentiated PanNET G3 to platinum-based chemotherapy: a case report].

According to the 2017 WHO classification (4th version), PanNEC G3 was subdivided into two groups:well-differentiated PanNET G3 and poorly differentiated PanNEC. Considering the insufficient number of case reports, appropriate chemotherapy for the new category PanNET G3 remains unknown. Here, we report a case of PanNET G3 that responded to platinum-based chemotherapy.