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Korean Journal of Obstetrics & Gynecology 2006;49(3):513-519.
Published online March 1, 2006.
Correlation between Ultrasonographic Findings of Endometrioma and Endometriosis Stage and Recurrence.
Shin Lee, Yong Kyoon Cho, Ji Kyung Ko, Tae Jong Song, Myeong Jin Yeon, Chul Min Lee, Hoon Choi, Bok Rin Kim
Department of Obstetrics and Gynecology, Inje University, Sanggye Paik Hospital, Seoul, Korea. ymkcho@sanggyepaik.ac.kr
This study was performed to evaluate of correlation between ultrasonographic findings of endometrosis and endometriosis stage and recurrence. METHODS: We reviewed medical records of fifty-nine patients who admitted the department of Obstetrics and Gynecology of Sanggye Paik Hospital from April 1998 to June 2004 and were surgically confirmed endometriosis stage 3-4. GnRH agonist was injected every 4 weeks after the first injection following initial operation and a total of six doses were injected to a patient. We performed ultrasonographic examination of pre- and post-operation at an interval of 3 or 6 months. The endometriotic ultrasonographic findings were classified into three group; low-level internal echo (LIE), LIE and septation, LIE and hyperechoic wall foci. The correlation between ultrasonographic finding of endometrioma and endometriosis stage and recurrence were analyzed by Fisher's exact test and Pearson's chi-square test. RESULTS: The follow-up periods after operation were about 11.9 months. Typical ultrasonographic findings of endometrioma were observed on 50 of 59 patients, diagnostic performance of ultrasound in the detection of endometrioma had a 84.7% sensitivity in this study. In 50 cases, 48% (n=24) had a only low-level internal echoes, 32% (n=16) had a low-level internal echoes and multiple septation, 20% (n=10) had a low-level internal echoes and hyperechoic wall foci. The most common ultrasonographic findings were LIE (50%) in stage 3, LIE and septation (33.3%) in stage 4. During follow-up we observed ultrasonographic recurrence in 6 (10.2%) cases. There were no statistically significant correlation between ultrasonographic finding and endometriosis stage or recurrence. CONCLUSION: Ultrasound is a convenient and reliable method for diagnosis of endometrioma. But, it appears that ultrasonographic findings of endometrioma not correlate with endometriosis stage or recurrence. Further long term follow-up studies in large scale is needed for correlation between ultrasonographic findings of endometriosis and clinical significance.
Key Words: Endometrioma, Ultrasound, Stage, Recurrence

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