Background: Choriocarcinoma is an aggressive trophoblastic malignancy characterized by rapid progression and a strong tendency for early hematogenous metastasis. It may occur in gestational or nongestational forms. Nongestational choriocarcinoma is extremely rare and is most commonly reported in young women. The tumor frequently metastasizes early to organs such as the lungs, liver, and brain. Case presentation: We report the case of a 21-year-old woman who presented with dyspnea and hemoptysis and was initially treated for pneumonia. Further evaluation revealed nongestational choriocarcinoma with pulmonary and hepatic metastases. Diagnosis: Contrast-enhanced computed tomography of the chest initially suggested pulmonary artery thromboembolism; however, the diagnosis was ultimately confirmed by histopathological examination. Conclusion The distinctive feature of this case is that the disease presented with clinical and radiological findings mimicking pulmonary artery thromboembolism. This case highlights the importance of considering metastatic choriocarcinoma in young women presenting with unexplained respiratory symptoms, hemoptysis, and atypical pulmonary vascular findings.

Introduction: Sophora alopecuroides L has broadly been utilized in traditional medicine and all crude drugs including root, herb, and seed are used to treat numerous diseases. This herb is included in 181 Tibetan-Mongolian medicinal prescriptions and ranks 8^th among Mongolian medicinal plants in terms of frequency of administration. The S.alopecuroidesL . root standard was developed by the Institute of Traditional Medicine and Technology in 2017 and approved by “ҮФӨ-0307-2017”. Herb and seed are still used in medicine. Therefore, their standard parameters need to be determined and verified. Materials and methods: The quantitative pharmacognosy analysis of herb and seed was carried out in accordance with the methodology specified in the “General requirements for medicinal plant raw materials” of the National Pharmacopoeia of Mongolia. To determine the total alkaloid in standard matrine, a bromcresol green complex was formed, which was measured by spectrophotometer. Conclusion By developing, standards for the crude drugs of herb and seed of S.alopecuroides L. which are included in numerous medicinal prescriptions, will confirm the rationale for the use of medicinal raw materials and to expand the utilization’s possibilities.