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Gynecology

The study and treatment of disorders of the female reproductive system.

โœ“ Introduction to Gynecology

โœ“ Introduction to Gynecology is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Menstrual Cycle Basics

โœ“ Menstrual Cycle Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Cervical Cancer Basics

โœ“ Cervical Cancer Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Pap Smear Basics

โœ“ Pap Smear Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Ovarian Cancer Basics

โœ“ Ovarian Cancer Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Endometriosis Basics

โœ“ Endometriosis Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Uterine Fibroids Basics

โœ“ Uterine Fibroids Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Pelvic Inflammatory Disease Basics

โœ“ Pelvic Inflammatory Disease Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Structure and function, clinical presentation, diagnostic criteria, and evidence-based management.

โœ“ Contraception Basics

โœ“ Contraception Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Infertility Basics

โœ“ Infertility Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Menopause Basics

โœ“ Menopause Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Preeclampsia Basics

โœ“ Preeclampsia Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecologic Oncology Basics

โœ“ Gynecologic Oncology Basics is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecologic Surgery Basics

โœ“ Gynecologic Surgery Basics is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Breast Disease Basics

โœ“ Breast Disease Basics is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Structure and function, clinical presentation, diagnostic criteria, and evidence-based management.

โœ“ Gynecologic Ethics Basics

โœ“ Gynecologic Ethics Basics is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecology Careers

โœ“ Gynecology Careers is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Advanced Gynecology

โœ“ Advanced Gynecology is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Menstrual Cycle

โœ“ Menstrual Cycle is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Cervical Cancer

โœ“ Cervical Cancer is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Pap Smear

โœ“ Pap Smear is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Ovarian Cancer

โœ“ Ovarian Cancer is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Endometriosis

โœ“ Endometriosis is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Uterine Fibroids

โœ“ Uterine Fibroids is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Pelvic Inflammatory Disease

โœ“ Pelvic Inflammatory Disease is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Structure and function, clinical presentation, diagnostic criteria, and evidence-based management.

โœ“ Contraception

โœ“ Contraception is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Infertility

โœ“ Infertility is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Menopause

โœ“ Menopause is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Preeclampsia

โœ“ Preeclampsia is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecologic Oncology

โœ“ Gynecologic Oncology is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecologic Surgery

โœ“ Gynecologic Surgery is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Breast Disease

โœ“ Breast Disease is a clinical topic covering pathophysiology, diagnosis, evidence-based treatment, and patient care.

Key points: Structure and function, clinical presentation, diagnostic criteria, and evidence-based management.

โœ“ Gynecologic Ethics

โœ“ Gynecologic Ethics is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Core principles, practical applications, and advanced concepts that build deep understanding.

โœ“ Gynecology Research

โœ“ Gynecology Research is an essential biology topic covering living systems, from cellular processes to ecosystems.

Key points: Time complexity (Big-O), space complexity, correctness proof, and practical implementation trade-offs.

Key Clinical Formulas & Scores

Bishop Score (Cervical Readiness for Induction):
Dilation (cm): 0=0, 1-2=1, 3-4=2, โ‰ฅ5=3
Effacement (%): 0=0-30%=0, 40-50%=1, 60-70%=2, โ‰ฅ80%=3
Station: -3=0, -2=1, -1/0=2, +1/+2=3
Consistency: Firm=0, Medium=1, Soft=2
Position: Posterior=0, Midposition=1, Anterior=2
Score: โ‰ค5 = unfavorable cervix (need cervical ripening)
Score โ‰ฅ6 = favorable (proceed with induction)
FIGO Staging โ€” Cervical Cancer (2018):
Stage I: Confined to cervix (IA=microinvasive, IB=clinically visible)
Stage II: Beyond cervix, not to pelvic wall/lower vagina
Stage III: Extends to pelvic wall, lower 1/3 vagina, hydronephrosis
Stage IV: Mucosa of bladder/rectum or distant metastasis
Treatment: IA1=cone biopsy, IA2=modified radical hysterectomy, IB-IIA=radical hysterectomy + pelvic lymphadenectomy, IIB-IV=definitive chemoradiation
FIGO Staging โ€” Ovarian Cancer:
Stage I: Ovaries only (IA=1 ovary, IB=both, IC=surface involvement/ascites)
Stage II: Pelvic extension (IIA=uterus/fallopian tubes, IIB=other pelvic tissue)
Stage III: Peritoneal implants outside pelvis/retroperitoneal nodes
Stage IV: Distant metastasis (pleural effusion, parenchymal liver mets)
Treatment: Surgical staging + debulking, then carboplatin/paclitaxel chemotherapy. Maintenance: bevacizumab, PARP inhibitors (if BRCA/HRD+)
PAP Test Bethesda Classification:
Negative: NILM (Negative for Intraepithelial Lesion or Malignancy)
ASC-US: Atypical Squamous Cells of Undetermined Significance
ASC-H: ASC, cannot exclude HSIL
LSIL: Low-grade Squamous Intraepithelial Lesion (HPV effect/CIN1)
HSIL: High-grade Squamous Intraepithelial Lesion (CIN2/CIN3)
SCC: Squamous Cell Carcinoma
Management: ASC-US โ†’ HPV testing (if +, colposcopy); ASC-H/LSIL/HSIL โ†’ colposcopy with biopsy
High-Risk HPV Types:
HPV 16, 18 (cause ~70% of cervical cancers)
HPV 31, 33, 45, 52, 58 (additional high-risk)
HPV 6, 11 (low-risk, cause genital warts)
Vaccination: 9-valent (6, 11, 16, 18, 31, 33, 45, 52, 58)
Screening: Cytology alone q3y (21-29), Cytology + HPV co-testing q5y (30-65)
USPSTF: Primary HPV testing every 5 years age 30-65 is now acceptable

Core Concepts

Pelvic Inflammatory Disease (PID)

Clinical criteria (CDC): cervical motion tenderness + uterine tenderness + adnexal tenderness (minimum). Additional: fever >38.3ยฐC, mucopurulent cervical discharge, elevated ESR/CRP, NAAT positive for N. gonorrhoeae/C. trachomatis. Treatment: outpatient โ€” ceftriaxone 500mg IM single dose + doxycycline 100mg BID ร— 14 days + metronidazole 500mg BID ร— 14 days. Inpatient โ€” cefotetan/cefoxitin IV + doxycycline IV. Complications: tubo-ovarian abscess, infertility, ectopic pregnancy, chronic pelvic pain.

Abnormal Uterine Bleeding (AUB-COEIN Classification)

Structural: Polyp (AUB-P), Adenomyosis (AUB-A), Leiomyoma (AUB-L), Malignancy (AUB-M). Non-structural: Coagulopathy (AUB-C), Ovulatory dysfunction (AUB-O), Endometrial (AUB-E), Iatrogenic (AUB-I), Not yet classified (AUB-N). PALM-COEIN system guides evaluation. Endometrial biopsy for age โ‰ฅ45 or risk factors (obesity, chronic anovulation, tamoxifen, Lynch). TVUS for initial structural evaluation.

Endometriosis

Definition: ectopic endometrial tissue outside the uterus. Theories: retrograde menstruation, coelomic metaplasia, lymphatic/vascular spread, stem cells. Symptoms: dysmenorrhea, dyspareunia, dyschezia, dysuria, chronic pelvic pain, infertility. Staging: rASRM (minimal I to severe IV). Gold standard for diagnosis: laparoscopy with biopsy. Treatment: NSAIDs, combined OCPs, progestins (norethindrone, dienogest), GnRH agonists (leuprolide) with add-back, aromatase inhibitors. Surgical: excision/ablation, hysterectomy + BSO for refractory.

Preeclampsia & Hypertensive Disorders of Pregnancy

Diagnostic criteria: BP โ‰ฅ140/90 after 20 weeks + proteinuria (โ‰ฅ300 mg/24h or protein/creatinine โ‰ฅ0.3) OR BP โ‰ฅ140/90 + end-organ dysfunction (thrombocytopenia, renal insufficiency, impaired liver function, pulmonary edema, cerebral/visual symptoms). Severe features: BP โ‰ฅ160/110, HELLP syndrome, eclampsia. Treatment: delivery is definitive. MgSOโ‚„ for seizure prophylaxis (4-6g load + 1-2g/hr maintenance). Antihypertensives: labetalol, nifedipine, hydralazine (target BP <160/110).

Clinical Case Studies

Case 1: Post-Coital Bleeding & Cervical Cancer

Patient: 38-year-old G2P2, presents with post-coital bleeding ร— 3 months. Pap smear: HSIL. HPV positive type 16. Colposcopy: aceto-white lesion at transformation zone with punctation. Biopsy: squamous cell carcinoma, moderate differentiation.

Diagnosis: Stage IB1 cervical cancer (lesion 2.5 cm, confined to cervix on MRI).

Management: Radical hysterectomy (type B/C1) + pelvic lymphadenectomy + sentinel lymph node mapping. Pathology: negative nodes, clear margins โ†’ observation. If positive nodes or positive margins โ†’ adjuvant concurrent chemoradiation (cisplatin 40 mg/kg weekly ร— 6 cycles with external beam RT ยฑ brachytherapy).

Case 2: Ectopic Pregnancy

Patient: 29-year-old G1P0, 7 weeks amenorrhea by dates, sharp right lower quadrant pain with vaginal spotting. ฮฒ-hCG = 3,500 mIU/mL. Transvaginal US: empty uterus, right adnexal gestational sac with fetal pole.

Diagnosis: Right tubal ectopic pregnancy.

Management: Unruptured, hemodynamically stable, ฮฒ-hCG <5,000 โ†’ medical management with methotrexate (single dose 50 mg/mยฒ IM or multi-dose regimen). Alternative: salpingostomy via laparoscopy. Follow ฮฒ-hCG until negative. Contraindications to methotrexate: rupture, hemodynamic instability, breastfeeding, immunodeficiency, alcoholism, liver/renal disease, blood dyscrasias.

Case 3: Abnormal Uterine Bleeding

Patient: 47-year-old G3P3, heavy menstrual bleeding ร— 8 months with clots, fatigue. Hgb 8.2 g/dL. TVUS: endometrial thickness 14 mm, heterogeneous. No focal lesions.

Assessment: Endometrial biopsy: complex atypical hyperplasia (precancerous, ~30-40% risk of concurrent carcinoma).

Management: Progestin therapy (medroxyprogesterone acetate 10-20 mg daily or LNG-IUD) for patients desiring fertility preservation with close surveillance. Total hysterectomy with BSO recommended for definitive treatment in patients who have completed childbearing. If invasive carcinoma found โ†’ staging surgery (hysterectomy, BSO, pelvic/para-aortic lymphadenectomy, omentectomy, peritoneal washings).

Practice Questions

Q1: A patient with a Bishop score of 4 requires induction of labor. What is the appropriate approach?
A: Score โ‰ค5 = unfavorable cervix. Use cervical ripening with prostaglandins (dinoprostone/misoprostol) or mechanical methods (Foley balloon) before oxytocin induction.
Q2: What HPV types are covered by the 9-valent vaccine?
A: HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58. This covers the two most oncogenic types (16, 18) causing ~70% of cervical cancers plus 5 additional high-risk types.
Q3: A patient with severe preeclampsia at 34 weeks has a Bishop score of 8. What is the definitive treatment?
A: Delivery is the only definitive treatment. Favorable Bishop (โ‰ฅ6) โ†’ proceed with induction of labor (oxytocin + amniotomy if needed) after maternal stabilization with MgSOโ‚„ and antihypertensives. Expedite delivery if maternal/fetal deterioration.
Q4: What is the gold standard for diagnosing endometriosis?
A: Laparoscopy with histological biopsy. Transvaginal ultrasound is useful for endometriomas and deep infiltrating disease but cannot rule out superficial peritoneal disease.
Q5: A 32-year-old with ASC-US on Pap smear tests negative for high-risk HPV. What is the recommended follow-up?
A: Return to routine screening โ€” repeat cytology and HPV co-testing in 3 years (or cytology alone in 1 year). ASC-US with negative high-risk HPV has a very low risk of CIN2+.

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