A case report of adenomyosis-induced spontaneous rupture in an unscarred and unpregnant uterus.

RATIONALE

Spontaneous uterine rupture, although rare, is a life-threatening obstetric emergency with a high maternal and fetal mortality rate. It can occur without warning, leading to severe complications, including hemorrhage, shock, and fetal demise. The risk factors contributing to uterine rupture are diverse and include a history of uterine surgery (such as cesarean section), trauma to the uterus, abnormal uterine contractions during labor, and underlying conditions like adenomyosis. Identifying and understanding these risk factors are crucial for early detection, timely intervention, and improved outcomes in affected pregnancies.

PATIENT CONCERNS

Here, we report an exceptionally rare case of spontaneous uterine rupture triggered by adenomyosis in a 34-year-old unmarried and nulliparous woman with no prior scarring or pregnancy. Physical examination revealed abdominal distension, with the uterine fundus at the level of the umbilicus, exhibiting hardness, tenderness upon palpation, and rebound tenderness. Ultrasonography and computerized tomography scans suggested adenomyosis and uterine rupture. During surgery, a rupture was discovered in the left basal layer of the uterus, with a rupture diameter of approximately 3 cm. Additionally, there were multiple internal endometrial lesions in the uterorectal pouch.

DIAGNOSES

Adenomyosis-induced spontaneous uterine rupture.

INTERVENTIONS

The procedures performed included excision of adenomyotic lesions, repair of the uterine rupture, and electrocoagulation of endometriotic lesions in the pelvic cavity.

OUTCOMES

At the 1-month post-surgery follow-up examination, the patient showed good recovery, with no signs of complications. She was able to resume normal daily activities without difficulty. The surgical site was healing well, with no signs of infection or abnormal scarring. Ultrasound and clinical assessments confirmed the resolution of pelvic fluid accumulation, and uterine function appeared to be intact. The patient was advised to continue regular follow-up visits to monitor her recovery and ensure long-term well-being.

LESSONS

First, uterine rupture caused by adenomyosis in a nonpregnant, scarless uterus is extremely rare but still possible. When patients with severe adenomyosis present with abdominal pain and pelvic fluid, obstetricians and gynecologists should consider the possibility of uterine rupture. Second, ultrasound examination can quickly and accurately diagnose both adenomyosis and uterine rupture.