This book covers some well-known and some unexplored pathological aspects of management of peritoneal metastases and should be read by both surgeons and pathologists involved in the management of peritoneal surface malignancies. The evaluation of cytoreductive surgery specimens is explored for the prognostic information it can provide and recommendations for evaluation of such specimens are provided. The pathways and patterns of peritoneal dissemination and their clinical implications on the extent of surgery performed and other aspects of management are discussed for some common peritoneal tumours. The exploratory studies presented here provide a new perspective on the surgical resection of peritoneal metastases. Other important aspects of pathological evaluation like pathological response to chemotherapy, diagnosis and classification of rare peritoneal tumors have also been covered in different chapters. Keeping in sync with the progress in molecular oncology, the role of molecular oncology in the current and future management of peritoneal metastases is addressed for different tumors.