Vulvovaginal Hematoma

Vulvovaginal hematoma is an uncommon but potentially life-threatening collection of blood within the vulvar, labial, or vaginal tissues. The incidence of puerperal vulvovaginal hematoma is approximately 1–2 per 1,000 vaginal deliveries.[1-2] Non-obstetric vulvar hematomas are rare, with an incidence of approximately 3.7% among vulvar trauma presentations.[3] The rich vulvar vascular network is vulnerable to injury from blunt or penetrating trauma, and bleeding is predominantly venous in origin.[4-5]

1. History

• Mechanism of injury: Obstetric (vaginal delivery, operative delivery) vs. non-obstetric (straddle injury, bicycle accident, sexual intercourse, sexual assault, vulvar surgery, blunt perineal trauma)[3][5-6]
• Onset and timing: Acute onset of vulvar/perineal pain and swelling; postpartum hematomas may not be recognized until hours after delivery[4]
• Pain characterization: Severe, pressure-like vulvar/perineal/rectal pain; may describe a sensation of fullness
• Progression: Ask about rapid enlargement of swelling, which suggests active bleeding[4]
• Associated symptoms: Urinary retention (reported in ~15% of non-obstetric cases), difficulty sitting, vaginal bleeding[3][6]
• Important negatives: Absence of preceding trauma (consider spontaneous hematoma, especially in pregnancy or on anticoagulants); deny fever (to distinguish from abscess)[7]

2. Alarm Features

• Rapidly expanding hematoma — suggests arterial bleeding requiring urgent intervention[4]
• Hemodynamic instability: Tachycardia, hypotension, elevated shock index — may indicate significant concealed hemorrhage[4][8]
• Vital sign deterioration without obvious external bleeding — consider retroperitoneal or intraperitoneal extension[4]
• Urinary retention — may indicate urethral compression[3][6]
• Signs of coagulopathy or disproportionate blood loss relative to visible hematoma size
• Suspected sexual assault — triggers forensic evaluation and SANE involvement[9]

3. Medications

Medication contributors

• Anticoagulants (warfarin, DOACs, heparin/LMWH) increase bleeding risk and hematoma severity[10-11]
• Antiplatelet agents (aspirin, clopidogrel)
• NSAIDs — impair platelet function
• SSRIs — associated with bleeding/bruising[10]
• Supplements: fish oil, ginkgo biloba[10]

Common treatments

• Analgesics: acetaminophen preferred; NSAIDs may be used cautiously if no active bleeding concern
• Ice packs for small, stable hematomas[9]
• Antibiotics: broad-spectrum coverage recommended if surgical evacuation is performed[1]
• Contraindicated medications: Avoid anticoagulants and antiplatelet agents during acute management if clinically feasible; coordinate with hematology if anticoagulation is essential

4. Diet

• No specific dietary triggers
• Hydration: Maintain adequate hydration, especially if significant blood loss
• Iron supplementation: Consider if anemia develops from blood loss
• Postpartum context: Stool softeners to avoid straining, which may worsen perineal hematoma

5. Review of Systems

• GU: Dysuria, urinary retention, hematuria (assess for urethral injury)[3][9]
• GI: Rectal pain/pressure, difficulty with defecation (assess for rectal involvement)[4]
• Heme: Easy bruising, bleeding from other sites (screen for coagulopathy)
• OB: Recent delivery details — mode, instrumentation, episiotomy, lacerations[4]
• Neuro: Lower extremity weakness or numbness (rare; consider retroperitoneal extension with nerve compression)
• Constitutional: Fever, chills (concern for secondary infection/abscess)

6. Collateral History and Family History

• Collateral: Delivery records (type, duration, instrumentation); trauma details from witnesses or EMS
• Family history: Bleeding disorders (von Willebrand disease, hemophilia carriers, platelet disorders)[10]
• Social context: Screen for intimate partner violence or sexual assault — involve SANE and social work as appropriate[3][9]

7. Risk Factors

• Obstetric: Operative vaginal delivery (forceps/vacuum), precipitous delivery, episiotomy, primiparity, prolonged second stage, macrosomia, preeclampsia[1][4]
• Non-obstetric: Straddle injuries (most common non-obstetric cause), bicycle accidents, sexual intercourse, sexual assault, vulvar surgery[3][5-6]
• Medical: Anticoagulant/antiplatelet use, inherited bleeding disorders (von Willebrand disease), thrombocytopenia, liver disease[10-11]
• Anatomic: The vulvar vascular network lacks valves and is highly vascularized, making it susceptible to hematoma formation from relatively minor trauma[5]
• Pregnancy: Increased pelvic vascularity and venous congestion[7]

8. Differential Diagnosis

• Vulvar/Bartholin abscess — may mimic hematoma; distinguished by warmth, erythema, fluctuance, and purulent drainage[6]
• Bartholin gland cyst — typically non-tender, chronic, unilateral
• Vulvar varicosities — soft, compressible, worsen with standing; common in pregnancy
• Retroperitoneal hemorrhage — consider if vital signs deteriorate without visible hematoma expansion[4]
• Pelvic fracture with associated hemorrhage — in trauma settings[9]
• Vulvar malignancy — rare; consider in non-traumatic, non-resolving masses
• Spontaneous internal iliac artery rupture — extremely rare; presents as vulvar hematoma with hemodynamic instability; associated with aneurysm, connective tissue disease[12]

9. Past Medical History

• Prior vulvovaginal hematomas or genital tract trauma
• Bleeding disorders or abnormal bleeding history
• Prior pelvic/vulvar surgery
• Obstetric history: prior operative deliveries, episiotomies, perineal lacerations
• Anticoagulant use and indication
• Liver disease, thrombocytopenia, or other coagulopathies

10. Physical Exam

• Vital signs: Heart rate, blood pressure, shock index (HR/SBP) — elevated shock index suggests significant hemorrhage[8]
• Inspection: Unilateral vulvar/labial swelling, ecchymosis, tense fluctuant mass; note size and document dimensions
• Palpation: Tender, firm-to-fluctuant mass; assess for rapid expansion by serial exams
• Vaginal exam: Assess for vaginal wall hematoma, cervical lacerations, high vaginal lacerations (may require exam under anesthesia)[3][9]
• Rectal exam: Assess for rectal involvement, posterior extension
• Urethral assessment: Check for urethral meatus displacement, hematuria, urinary retention[3]
• Perineal body: Assess integrity, associated lacerations (present in up to 50% of premenarchal patients)[6]

11. Lab Studies

• CBC with serial hemoglobin/hematocrit — monitor for progressive anemia from occult bleeding[5]
• Type and screen/crossmatch — if large hematoma or hemodynamic instability; transfusion required in up to 73% of puerperal cases requiring surgery[1]
• Coagulation studies: PT/INR, aPTT, fibrinogen — especially if on anticoagulants, suspected DIC (postpartum), or bleeding disorder[10]
• Metabolic panel: Assess renal function, electrolytes
• Pregnancy test: In all reproductive-age women[3]
• Von Willebrand panel: If recurrent or unexplained bleeding[10]

12. Imaging

• First-line: Transperineal/transvaginal ultrasound — useful for characterizing hematoma size, location, and monitoring for expansion; can guide conservative management[13-14]
• CT with contrast: Gold standard for large or expanding hematomas; identifies active extravasation (the key determinant for intervention vs. conservative management), retroperitoneal extension, and hematoma volume[8]
• Presence of extravasation on CT was the only significant predictor of need for therapeutic intervention (aRR 5.30)[8]
• MRI: Provides detailed mapping and excludes retroperitoneal involvement; useful for follow-up but not typically first-line in the acute setting[14]
• Imaging unnecessary: Small (<3 cm), stable, non-expanding hematomas in hemodynamically stable patients can be managed clinically[6][15]

13. Special Tests

• Shock Index (HR/SBP): Used to assess hemodynamic significance; elevated values correlate with need for transfusion[8]
• Examination under anesthesia (EUA): Indicated when full assessment of vaginal/cervical lacerations is not possible at bedside, or when sexual abuse is suspected in pediatric patients[3][9]
• Foley catheter placement: Both diagnostic (assess for urinary retention) and therapeutic (comfort)[6]
• Angiography: Diagnostic and therapeutic in cases refractory to surgical management; allows selective embolization[2][12]

14. ECG

• ECG is not routinely indicated for vulvovaginal hematoma
• Indications: Obtain if hemodynamically unstable, significant hemorrhage requiring resuscitation, or pre-procedural assessment
• Findings to watch for: Sinus tachycardia (hemorrhagic shock), ST changes in the setting of massive blood loss and anemia

15. Assessment

Severity stratification

• Small, stable hematomas (<5 cm non-obstetric; no extravasation on imaging): Conservative management appropriate[6][8-9]
• Large hematomas (>5 cm) or those with active extravasation: Require intervention[9]
• Hemodynamically unstable: Life-threatening emergency requiring resuscitation and urgent intervention[4]
• Typical presentation: Acute onset unilateral vulvar pain and swelling following delivery or trauma
• Atypical presentations: Delayed postpartum presentation (hours after delivery with only rectal/pelvic pressure); spontaneous hematoma in pregnancy without trauma; vulvar hematoma as presentation of internal iliac artery rupture[4][7][12]
• Complications: Hemorrhagic shock, secondary infection/abscess, urinary retention, need for transfusion, recurrence, wound breakdown after surgical repair[1][16]

16. Treatment Plan

• Conservative management (stable, non-expanding hematomas without extravasation):
• Ice packs, compression, analgesics (acetaminophen ± NSAIDs)[3][9]
• Serial exams and hemoglobin monitoring[5]
• Foley catheter if urinary retention[6]
• Hematomas without extravasation on CT can be managed conservatively regardless of size[8]
• Most hematomas ≤3 cm (premenarchal) and ≤6 cm (postmenarchal) resolve conservatively[6]
• Surgical intervention (rapidly expanding, hemodynamically significant, or >5 cm per ACS guidelines):
• Incision and drainage with evacuation of clot[9]
• Identify and ligate bleeding vessels; if no discrete source found, suture and pack the cavity[4]
• Closed-system drainage (e.g., Jackson-Pratt) may reduce reaccumulation[1]
• Broad-spectrum antibiotics when surgical evacuation is performed[1]

Transcatheter arterial embolization (TAE)

• Consider before surgical exploration, especially for postpartum hematomas[4]
• TAE associated with significantly less blood transfusion compared to surgery[8]
• Targets pudendal, inferior gluteal, or internal iliac artery branches[2]
• Transfusion: Type and crossmatch early; transfusion required in up to 73% of surgically managed puerperal cases[1]

17. Disposition

Admission criteria

• Hemodynamic instability or need for resuscitation
• Large (>5 cm) or rapidly expanding hematoma
• Need for surgical evacuation or embolization
• Significant anemia requiring transfusion
• Urinary retention requiring catheterization
• Inability to exclude retroperitoneal extension[4][9]

Observation indications

• Moderate-sized hematomas (3–5 cm) with stable vitals — serial exams and hemoglobin checks over 4–6 hours

Discharge criteria

• Small, stable, non-expanding hematoma
• Hemodynamically stable with stable hemoglobin
• Adequate pain control
• Able to void spontaneously
• Reliable follow-up arranged

Specialist consultation triggers

• OB/GYN: All postpartum hematomas; large or expanding non-obstetric hematomas
• Interventional radiology: For consideration of TAE when surgical hemostasis fails or as first-line for postpartum hematomas with extravasation[4][8]
• Pediatric gynecology: Pediatric patients[6]
• Trauma surgery: Associated pelvic fracture or multi-system injury[9]

18. Follow Up / Return Precautions

• Follow-up timing: 48–72 hours for conservatively managed hematomas; 1–2 weeks post-surgical intervention[6][17]

Return immediately for

• Increasing swelling, pain, or pressure
• Lightheadedness, dizziness, or syncope
• Fever or purulent drainage (concern for abscess)
• Inability to urinate
• Heavy vaginal bleeding

Patient counseling

• Avoid strenuous activity, heavy lifting, and sexual intercourse until resolution
• Sitz baths may provide comfort after the acute phase
• Expect gradual resolution of ecchymosis over 2–4 weeks
• Expected recovery: Conservatively managed hematomas typically resolve in ~3 weeks; surgical evacuation provides the most prompt resolution (~9 days)[17]

References

1. Vulvovaginal Hematomas Complicating Delivery. Rationale for Drainage of the Hematoma Cavity. — Zahn CM, Hankins GD, Yeomans ER. The Journal of Reproductive Medicine. 1996.

2. Postpartum Angiographic Embolization for Vulvovaginal Hematoma. A Report of Two Cases. — Villella J, Garry D, Levine G, et al. The Journal of Reproductive Medicine. 2001.

3. Non-Obstetric Vulval Trauma. — Jones IS, O'Connor A. Emergency Medicine Australasia : EMA. 2013.

4. Practice Bulletin No. 183: Postpartum Hemorrhage. — Committee on Practice Bulletins—Obstetrics Obstetrics and Gynecology. 2017.

5. Serious Hematoma of the Vulva From a Bicycle Accident. A Case Report. — Virgili A, Bianchi A, Mollica G, Corazza M. The Journal of Reproductive Medicine. 2000.

6. Non-Obstetric Traumatic Vulvar Hematomas in Premenarchal and Postmenarchal Girls. — O'Brien K, Fei F, Quint E, Dendrinos M. Journal of Pediatric and Adolescent Gynecology. 2022.

7. Spontaneous Vulvar Hematoma During Pregnancy: A Case Report. — Nelson EL, Parker AN, Dudley DJ. The Journal of Reproductive Medicine. 2012.

8. Transcatheter Arterial Embolization Outperforms Surgery in Reducing Blood Transfusions for Postpartum Vulvovaginal Hematoma. — Takahashi T, Tomita H, Hamada H, et al. American Journal of Obstetrics and Gynecology. 2024.

9. Best Practices Guidelines Management of Gentiunrinary Injuries. — Niels Johnsen, Hunter Wessells, Krystal Archer-Arroyo, et al American College of Surgeons (2025). 2025.

10. Bleeding and Bruising: Primary Care Evaluation. — Hughes PR, Lewis MN, Adams SS. American Family Physician. 2024.

11. Abnormal Uterine Bleeding in Anticoagulated Patients by Drug Class: Outcomes and Management. — Brioso XB, Bolt M, Sammel MD, McKenney K. American Journal of Obstetrics and Gynecology. 2023.

12. Vulvar Hematoma Secondary to Spontaneous Rupture of the Internal Iliac Artery: Clinical Review. — Egan E, Dundee P, Lawrentschuk N. American Journal of Obstetrics and Gynecology. 2009.

13. Transperineal Sonography of a Large Vulvar Hematoma Following Blunt Perineal Trauma. — Sherer DM, Stimphil R, Hellmann M, et al. Journal of Clinical Ultrasound : JCU. 2006.

14. Puerperal Vulvovaginal Hematoma: Sonographic Findings With MRI Correlation. — Guerriero S, Ajossa S, Bargellini R, et al. Journal of Clinical Ultrasound : JCU. 2004.

15. Traumatic Vulvar Hematomas: Conservative Versus Surgical Management. — Propst AM, Thorp JM. Southern Medical Journal. 1998.

16. Vulvar and Vaginal Hematomas: A Retrospective Study of Conservative Versus Operative Management. — Benrubi G, Neuman C, Nuss RC, Thompson RJ. Southern Medical Journal. 1987.

17. Treatment Strategies for Obstetric Puerperal Genital Hematomas: A Case Series. — Gutierrez AJ, Dawodu K, Mayer KH, McGill AL. Obstetrics and Gynecology. 2022.