What are two of the predisposing factors for nephrolithiasis?
Choose 2 answers.

A. Rheumatoid arthritis also involves morning stiffness and symmetrical joint pain, but it typically affects smaller joints first (e.g., hands, wrists), and does not usually cause Heberden's and Bouchard's nodes, which are more characteristic of osteoarthritis.

B. Osteomalacia involves bone softening due to vitamin D deficiency and does not present with joint nodes or the type of stiffness described.

C. Osteoarthritis is a degenerative joint disease characterized by morning stiffness, limited range of motion, and joint pain that worsens with activity. Heberden's and Bouchard's nodes are specific to osteoarthritis, typically appearing on the fingers.

D. Rickets is a pediatric disorder caused by vitamin D deficiency, leading to bone deformities, but it does not cause the joint issues or nodes described.

A. Urethritis: Chlamydia trachomatis is a common cause of urethritis in both men and women.

B. Mastitis: This is typically caused by bacterial infections in the breast tissue, not C. trachomatis.

C. Ectopic pregnancy: Chlamydia infection can lead to pelvic inflammatory disease (PID), which increases the risk of ectopic pregnancy.

D. Cervicitis: Although C. trachomatis does cause cervicitis, it's less specific compared to urethritis and ectopic pregnancy.

E. Teratoma of the ovary: This is a type of ovarian tumor, unrelated to C. trachomatis.

F. Endometriosis: This is a condition where endometrial tissue grows outside the uterus and is not caused by C. trachomatis.