December 7, 2021

Background: Peritoneal metastasis is one of the most common forms of metastases for gastric cancer [1]. The 15th edition of the Japanese Classification of Gastric cancer defines patients with pos itive peritoneal lavage cytology (CY1) as stage IV gastric cancer [2-3]. Treatment options are inconclusive for patients whose peri toneal metastases are limited to CY1[4].

1.1. Objective: To determine whether changes in CT are better than clinical symptoms for treatment evaluation, and whether CT is necessary to determine the discharge of patient undergoing COVID-19 treatment.

1.1 Background: Post-transplant lymphoproliferative disorder (PTLD) is a known complication following solid organ or hema topoietic stem cell transplantation.