A 28-year-old nulligravid woman has had increasingly severe dysmenorrhea over the past 2 years and dyspareunia and pain with defecation for 6 months. She has been unable to conceive for 2 years. Pelvic examination shows a fixed, tender, retroverted uterus, nodularity of the uterosacral ligaments, and tender adnexa bilaterally; there is a 5-cm, tender, cystic, right adnexal mass. A pregnancy test is negative.
Select the most likely diagnosis.
A) Adenomyosis
B) Adnexal torsion
C) Appendicitis
D) Diverticulitis
E) Ectopic pregnancy
F) Endometriosis
G) Endometritis
H) Inflammatory bowel disease
I) Leiomyomata uteri
J) Ovarian carcinoma
K) Pelvic inflammatory disease
L) Primary dysmenorrhea
M) Renal calculus
N) Ruptured corpus luteum cyst
O) Spontaneous abortion