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Diagnosis of endometriosis 3rd part - Ultrasound diagnosis of deep endometriosis.

OBJECTIVE
To summarise the current knowledge and trends in the diagnosis of deep endometriosis.


DESIGN
Review article.


SETTING
Centre for diagnostics and treatment of endometriosis and Gynecologic Oncology Centre, Department of Obstetrics and Gynaecology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Department of Gynaecology and Obstetrics, Burton Hospitals NHS, United Kingdom.


METHODS
Literature review.


RESULTS
Deep endometriosis (DE) in the pelvis is divided into lesions in the anterior and posterior compartment. In the anterior compartment DE infiltrates bladder and ureters, while in the posterior compartment it is mostly uterosacral ligaments, rectum, rectosigmoid and sigmoid colon and rarely rectovaginal septum and posterior fornix. Extrapelvic endometriosis is a rare disease typically located in the proximal bowel segments (jejunum/ileum/appendix), abdominal wall including umbilicus, scars after spontaneus delivery and/or after cesarian section, lungs and diaphragm.


CONCLUSION
Ultrasound diagnosis of pelvic DE has a high accuracy in the hands of an experienced sonographer. Extrapelvic endometriosis is sporadic and imaging of choice depends on the location, such as use of magnetic resonance in retroperitoneal disease (sciatic nerve), computed tomography or endoscopy in thoracic lesions.