A case of intussusception caused by cecal duplication after COVID-19.

Coronavirus disease 2019 (COVID-19) was thought to have respiratory symptoms as the main manifestation, but it has become clear that extrapulmonary symptoms such as gastrointestinal disorders also occur. There are several reports of intussusception associated with COVID-19 in children, but these are rare in adults. In this report, we present a case of cystic intestinal duplication that enlarged during the course of COVID-19 treatment and resulted in intussusception. Right hemicolectomy was performed for intussusception due to the cystic lesion. To the best of our knowledge, this is the first resected case of intussusception due to alimentary tract duplication after COVID-19 infection.

A case of gastric cancer with delayed onset of tumor reduction effect by nivolumab therapy.

Immune checkpoint inhibitors may have different clinical effects compared with conventional anticancer drugs. An 85-year-old male received chemotherapy for recurrent gastric cancer. As liver metastasis progressed, nivolumab was introduced as a fourth line treatment. Progression of liver metastasis in size was observed in CT after 3 courses of nivolumab therapy. Nivolumab treatment was discontinued, because the general condition of the patient also worsened. However, his general condition improved as hepatobiliary enzyme levels, inflammatory response, and tumor markers improved. Liver metastasis was shrinking on the image, so we resumed nivolumab therapy. To the authors' knowledge, this is the first case of pseudoprogression undergoing immunotherapy for gastric cancer. In this case, the antitumor effect was exhibited in a delayed manner and the tumor shrinkage was obtained.

Successful Treatment with 5-fluorouracil and Levofolinate Calcium in Advanced Gastric Cancer Patient with Disseminated Intravascular Coagulation.

A 32-year-old woman was found to have a gastric adenocarcinoma with multiple bone metastases. Chemotherapy in the first, second and third-line was not effective. Blood examinations showed disseminated intravascular coagulation(DIC)at the end of the second-line chemotherapy. The fourth-line chemotherapy, infusional 5-fluorouracil and levofolinate calcium was performed. This resulted in a good response for DIC. This palliative therapy was effective and safety.

Modified administration schedule of docetaxel, cisplatin, and fluorouracil for advanced or recurrent gastric cancer with gastrointestinal stenosis.

PURPOSE: To evaluate the safety and efficacy of a modified administration schedule of docetaxel, cisplatin, and fluorouracil (mDCF)in patients with advanced gastric cancer with gastrointestinal stenosis in clinical practice. METHODS: In the chemotherapy-naïve patients who had metastatic or recurrent histologically confirmed gastric cancer, docetaxel(40mg/m2), levofolinate(200mg/m / / / 2), fluorouracil(400mg/m2)on day 1, fluorouracil 1,000 mg/m2d-2 days intravenous continuous in fusion beginning on day 1, and cisplatin(40mg/m2)on day 3 was administered every 2 weeks. RESULTS: Six patients received mDCF therapy. In 5 patients with measurable disease, the overall response rate was 86%. Median progression-free survival was 310 days and median overall survival was 599 days. Symptom improvement after the first cycle of mDCF was obtained in all patients. Grade 3 or 4 leukopenia and neutropenia were observed in 2(33%)and 6(100%)patients, respectively. There were no treatment-related deaths. CONCLUSION: mDCF seems to be active against metastatic and recurrent gastric cancer with gastrointestinal stenosis. Further study is needed to confirm the efficacy and safety of mDCF regimen.