The book is an update on contentious or unsettled issues concerning invasive diagnostic and therapeutic challenges in cancer and related disorders, focusing on the surgical approach. Topics include recommendations for the best practice in using the surgery safety checklist, surgical strategies in a variety of thoracic cancers, renal cell carcinoma, tumors of parathyroid glands, mesothelioma, and bariatric surgeries. The focus is on the diagnostic and therapeutic challenges of aggressive cancerous entities, choosing the most beneficial modes for optimal outcomes and patient survival. Chapters also address radioimaging and therapy outcomes in different intracranial lesions leading to severe neurological disabilities. The areas of medical practice addressed are still veiled in uncertainty, yet-unresolved pathogenetic background, and have a substantial component of empirical rather than evidence-based clinical approach. Pursuing and sharing new ideas and innovations is essential for improving the management and outcome. The book endeavors to disseminate and deliberate on the latest medical knowledge, studies, and advancements in surgical and diagnostic dealing with cancer. The book is addressed to physicians and surgeons, and all allied health care professionals engaged in patient care and therapy.