Chapter 1: Peritoneal Organ-Anatomical and Physiological Considerations -- Chapter 2: drug delivery platforms for intra-peritoneal delivery focusing primarily on need, delivery systems, clinical progress, market and regulatory aspects -- Chapter 3: Liposomes and Lipid Nanoparticles as Peritoneal Drug Delivery Systems -- Chapter 4: Nano and micro/medicines for intraperitoneal therapy in ovarian cancer: critical overview and focus on pharmaceutical manufacturing under cGMP -- Chapter 5: Pressurized Intraperitoneal Aerosolized Chemotherapy (PIPAC): Promising Strides from India -- Chapter 6: HIPEC: Concept and Fundamentals in Colorectal Cáncer Peritoneal Mestatasis Treatment -- Chapter 7: Peritoneal Implants and Drug Delivery -- Chapter 8: Importance of Computational Models in Development of Intrapertitoneal Administration based Drug Delivery Systems for Solid Tumors -- Chapter 9: Drug Delivery Systems for peritonium : current status and Future perspectives -- Chapter 10: Exploring the Intraperitoneal Route in a New Way for Preclinical Testing.