This book covers several areas of disease and pathogen research. The contributions by the authors include gender differences, dermatoses, Sarcomatoid carcinoma of prostate, carcinosarcoma; immunohistochemistry, cytokeratin, synovial sarcoma of prostate, radical prostatectomy, keratin reactivity, primary angiosarcoma, antigen, liposarcoma, epididymis, inguinoscrotal, histopathology, tomography, radical orchidectomy, prognosis, radiotherapy,chemotherapy etc. This book contains various materials suitable for students, researchers and academicians in the field of disease and pathogenic research.