 Hello everybody, this is Dr. Rashita Basappa, a junior restaurant from Wadiahi Institute of Medical Sciences. And being a part of tertiary oncology center, my topic for today is a retrospective analysis of the peritoneal deposits in the various abdominal pelvic malignancies. Peritoneal cavity forms a complex anatomy involving the various spaces and peritoneal reflections or folds. The complex anatomy of the peritoneal is well demonstrated by the cross-sectional imaging tool, which includes a CT or MRI. However, the CT forms a first-line imaging tool in its suspected or proven case of various abdominal pathologies or malignancies. Peritoneal cavity is divided into two major compartments, that is supramisocolic and inframisocolic. And these are the supramisocolic compartments mainly formed for the multiple ligaments. And inframisocolic compartment includes the misentry and the misocolon. The need for the study is to demonstrate the complexity of the peritoneal cavity and the demonstration of its involvement or imaging of its pathologies by the CT as a versatile tool. The coronal view of peritoneal spaces and attachments within the supramisocolic and inframisocolic compartments, which are demonstrated in the schematic diagram here and here, and which includes the right supranic space, right subdiapatic space, left supranic space, lesser site, gastro-spanic ligament, root of transverse misocolon, a root of small bone misentry and bilateral paracolic gutters and bilateral inframisocolic gutters and a root of sigmoid misocolon. The objective is to demonstrate the incidence of peritoneal involvement in patients with various abdominal pelvic malignancies and to demonstrate the various pattern of peritoneal involvement in various abdominal pelvic malignancies. Here is the retrospective observational study, which was conducted on the 70 patients in our hospital who are androvent CECTA and MRA with contrast for various abdominal pelvic malignancies for a period of four years, that is between 2017 to 2020. All the patients with peritoneal deposits of various abdominal pelvic malignancies were included in the study. Herculoses or lymphoferrite disorders are excluded and the patients without the peritoneal involvement are also excluded. And the study mainly involved all the abdominal pelvic malignancies and it was found to have the common idea of peritoneal deposits in both diaphragmatic spaces and paracolic gutters and pelvic cavity. The peritoneal carcinomatosis is an interperitoneal discrimination of any tumor that does not arise from the peritoneal itself. It's the most common diffuse peritoneal decrease. The option had made the management of the patients with peritoneal malignancies because earlier it was thought to be fatal and of poor prognosis and root of discrimination in peritoneal carcinomatosis includes hematogenes, contiguous, lymphatic and peritoneal surface by the redistribution by the gravity, that key signs of the peritoneal carcinomatosis again on the imaging includes the ascites for the greater romantic involvement of the mid-centric tumor influence in the peritoneal CDS membrane and peritoneal cancer index is an accuracy of CT in the detection of peritoneal metastasis and the peritoneal deposits are taken separately noted on each of the nine segments of the abdomen and pelvis. That includes these nine segments in the coronal image of the abdomen and the pelvis and the upper and middle, upper and lower genus and the upper and lower helium as the other four segments. There are various etiologies of the malignancies arising from various abdominal pelvic organs and also extra abdominal organs like breast carcinoma, lungs and malignant melanoma are over and database from our study were contributed by the Oryoneoplasm, Colblader, Colangio carcinoma, HCC, gastric pancreatic, colorectal, cervical and endometrial patterns of peritoneal deposits in the form of Oryoneoplasm, which is demonstrated as diffusely thickened mass replacing the normal Oryoneoplasm, cystic masses with a soft tissue mass with a cystic component, nodular enhancing soft tissue nodules, small shrinkage density or the soft tissue permeation of the Oryoneoplasm, mixed variety having two or more of the above features. It's very sensitive because it's non-ionizing and a primary tool and less than two centimeters of the intraperitoneal deposits are always missed and deposits in along the small molecule in the center are also missed and the maximum accuracy falls when there is a cross site is and it's also helps in the efficiency or the biopsy of the peritoneal deposits if it's very accessible to the ultrasound and the CT forms the major imaging to MRI due to its inferior spatial resolution and to the respiratory and the bowel peristaltic artifacts and a fail to demonstrate the bowel pathology. MRI is a less preferred imaging tool compared to CT. CT forms a functioning tool and the diagnostic laparoscopy forms the exploratory laparoscopy forms the therapeutic and the diagnostic tool by obscuring the efficiency from the direct peritoneal deposits as the short short diagnostic tool. Oryoneoplasms usually have a high tendency to implant in the right paracolytid cutter and right sub-drachmatic region as the one centimeters are likely to be missed due to its density. NAR database 17 cases of Oryoneoplasm forms the major majority with a sensitivity of 69 percent in ultrasound and 87 percent CT and 70 percent on MRI when compared with the PET CT or the exploratory laparotomy. This is the nodular type of the peritoneal enrollment which is demonstrated in the axial CT section now over in carcinoma and it's a small stripe it's a coronal which is replacing the omental fat with a cross site. Carcinoma gallbladder here it presents as an acytus omental nodules are the peritoneal implants with the intraperitoneal spread and the patient who underwent exploratory laparotomy had found to have a 24 percent peritoneal deposits however the preoperative staging with the CT was found to be 83 to 86 percent in accuracy and this is the axial section of the CT which is showing a nodular soft tissue in densities in the omentum concentric asymmetrical soft tissues when wall thickening noted in the GB forza with the folal etiases and central IHB. Most common pattern of peritoneal involvement is mixed followed by omental kicking, nodular deposits, cystic type and smudge type and oryoneoplasms usually present as omental kicking followed by a mixed type and a nodular type. Polar rectum malignancy is usually a mixed type and a nodular type. Pancreatic cancers usually present as omental kicking, gastric presence and nanomaterial present as a nodular type. Gallbladder and the colangeal carcinoma and HCC present as a mixed type and cervical carcinoma present as a nodular or mixed type. To conclude the peritoneal involvement in various abdominal pelvic malignancies where the majority is contributed by the oryone or the colorectal carcinoma however the mixed pattern of peritoneal involvement is the most frequently seen followed by omental kicking and nodular. The most common site of peritoneal malignancy was pouch of Douglas followed by a paracutus and these are my references and thank you.