Illness script
Ovarian Tumors (Benign vs. Malignant)
Adnexal mass presenting with pelvic pain, bloating, or incidental finding; malignancy suggested by age, ascites, and elevated CA-125.
This illness script for Ovarian Tumors (Benign vs. Malignant) covers the classic presentation, who it affects, how you work it up, the mechanism, and first-line treatment—written for USMLE Step 1 and clerkship clinical reasoning.
Updated Jul 18, 2026All scripts
01
Who it affects
- Benign: reproductive-age women (20-40s)
- Malignant epithelial: postmenopausal women (>50)
- Risk factors: nulliparity, early menarche/late menopause, BRCA1/2, Lynch syndrome
- Protective: OCPs, multiparity, breastfeeding, tubal ligation
- Germ cell tumors in young women/adolescents
02
Diagnostics & workup
- History: bloating, early satiety, pelvic pain, urinary frequency (often vague/late)
- Exam: fixed, solid, irregular adnexal mass; ascites suggests malignancy
- Transvaginal ultrasound first-line: assess size, solid components, septations, ascites
- Tumor markers: CA-125 (epithelial), AFP/hCG/LDH (germ cell), inhibin (granulosa)
- CT/MRI for staging and metastasis assessment
- Gold standard: surgical exploration with histopathology (no percutaneous biopsy - risk of seeding)
03
Pathophysiology
- Epithelial (most common): from surface coelomic epithelium (serous, mucinous, endometrioid)
- Germ cell: from totipotent germ cells (teratoma, dysgerminoma, yolk sac)
- Sex cord-stromal: from stroma (granulosa - estrogen; Sertoli-Leydig - androgens)
- Incessant ovulation theory: repeated epithelial repair drives malignant transformation
- Malignant spread transcoelomic seeding across peritoneum
04
Treatment
- Benign/simple cyst: observation or cystectomy if symptomatic
- Mature cystic teratoma: cystectomy (preserve fertility)
- Malignant: surgical staging with TAH-BSO, omentectomy, debulking
- Adjuvant platinum-based chemo (carboplatin + paclitaxel) for advanced epithelial
- Fertility-sparing surgery for early germ cell tumors in young patients
- Refer to gynecologic oncology for suspected malignancy
Keep reading
Full library- Ovarian Tumors (Benign vs. Malignant)Adnexal mass; benign in young women, but malignant risk rises with age, size, and complexity.
- Overflow IncontinenceChronic urinary retention causing constant dribbling from a distended, poorly emptying bladder.
Educational use only. This illness script is a study framework, not medical advice. Confirm decisions with current guidelines and your clinical supervisors.