Evaluation of peritoneal fluid hemosiderin-laden macrophages in biopsy-proven endometriosis
Mohamed Ali Bedaiwy1, Javier Noriega, Mahmoud Abdel Aleem
1Reproductive Research Center, Minimally Invasive Surgery Center, Department of Obstetrics-Gynecology, Cleveland Clinic, 9500 Euclid Avenue, A-81, Cleveland, Ohio 44195, USA.
Objective:
To evaluate peritoneal fluid hemosiderin-laden macrophages (H-LMs) in patients with endometriosis compared to controls.
Study Design:
Consecutive series of 46 patients during a year undergoing laparoscopy for benign gynecologic conditions were included. The presence of H-LMs in peritoneal fluid was evaluated. We compared clinical factors in patients with or without endometriosis in respect to H-LM status. To assess the potential of H-LMs to diagnose endometriosis, the sensitivity and specificity were calculated.
Results:
Patients with endometriosis were significantly more likely to have positive H-LM test results than controls (p = 0.0013). The presence of H-LM has a low sensitivity of 52% but an acceptable specificity of 87% in diagnosing endometriosis. The presence of H-LMs was not related with any other of the clinical factors studied.
Conclusion:
The presence of specific findings of H-LMs related to endometriosis strongly suggests abnormalities in peritoneal iron metabolism.
Insights
Hemosiderin-laden macrophages (H-LMs) in peritoneal fluid are more common in endometriosis patients. While H-LMs show low sensitivity, their high specificity aids in diagnosing endometriosis and suggests altered iron metabolism.
Area of Science:
- Gynecology
- Pathology
- Reproductive Medicine
Background:
- Endometriosis is a condition where endometrial-like tissue occurs outside the uterus.
- Peritoneal fluid analysis can aid in diagnosing gynecological conditions.
- Hemosiderin-laden macrophages (H-LMs) are indicative of prior bleeding.
Purpose of the Study:
- To evaluate the presence of H-LMs in peritoneal fluid of patients with endometriosis.
- To compare H-LM status between endometriosis patients and controls.
- To determine the diagnostic potential of H-LMs for endometriosis.
Main Methods:
- Analysis of peritoneal fluid from 46 patients undergoing laparoscopy for benign gynecologic conditions.
- Evaluation of H-LM presence in peritoneal fluid.
- Comparison of clinical factors and calculation of sensitivity and specificity for H-LM diagnosis of endometriosis.
Main Results:
- Patients with endometriosis showed significantly higher rates of positive H-LM tests (p = 0.0013).
- H-LM presence demonstrated a sensitivity of 52% and a specificity of 87% for diagnosing endometriosis.
- No significant relationship was found between H-LM presence and other clinical factors.
Conclusions:
- Positive H-LM findings in peritoneal fluid are strongly associated with endometriosis.
- The results suggest potential abnormalities in peritoneal iron metabolism in endometriosis patients.
- H-LMs may serve as a useful, albeit not fully sensitive, diagnostic marker for endometriosis.
