1. Abstract
A 32-year-old male presented with recurrent abdominal pain for two years. Esophagogastroduodenoscopy revealed duodenal wall penetration by a metallic foreign body, subsequently identified via computed tomography as an inferior vena cava.

Abstract .1
A 34-year-old young female patient was admitted to hospital with abdominal discomfort and intermittent fever for more than 1 month. Puncture pathological result: except 1.

1. Abstract
Boerhaave syndrome is a rare, life-threatening condition. Symptoms are often atypical, so early diagnosis is crucial for prompt treatment.

1. Abstract
1.1. Background
Salmonella is a genus of bacteria that is primarily recognized for causing foodborne illnesses and gastrointestinal infections. However, cases involving empyema attributed to Salmonella remain quite rare, with only a handful of cases reported in the medical literature.

1. Abstract
1.1. Introduction
Myomatous-erythrocytic syndrome is an exceptionally rare clinical entity characterized by the coexistence of giant uterine leiomyomas defined as fibroids measuring ≥20 cm and erythrocytosis, marked by an abnormal elevation in red blood cell mass, hemoglobin, and hematocrit.

1.1. Study Question
Does functional asymmetry exist between the right and left human ovary in terms of oocyte quantity and quality under controlled ovarian stimulation?

1. Introduction
Activated natural killer cell immunotherapy (ANK therapy) is a treatment in which NK cells are extracted from the patient’s own blood, expanded, activated, and then returned to the body.

1. Abstract
Stop NOx elimination by ammonia. Stop water clean centre. Abandon bonfire inhibition rule. These 3 items are essential to promote CO2 assimilation to stop global warming stop.