This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Prostate & Seminal Vesicles, Subject name: Surgery
70 years old male presents with signs of obstructive uropathy with sever continuous pain in back region. Following is the X ray of patient's lumbar spine. What is the most possible pathology patient is suffering from? - 
Select and explain. 
A. Prostate carcinoma, B. Benign prostatic hyperplasia, C. Prostatitis, D. Hydronephrosis
A: Prostate carcinoma
Answer: A: Prostate carcinoma 
Explanation: Ans. is 'a' i.e., Prostate carcinoma * 70 years old male presents with signs of obstructive uropathy - Benign prostatic hypertrophy or carcinoma prostate.* With sever continuous pain in back region - most probably secondary to metastases from prostate carcinoma (as pain is continuous). These metastases are typically to lumber vertebrae and osteoblastic in nature.