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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Why Is Omentectomy Done For A Dermoid Ovarian Cyst During Pregnancy?

Hi, I am a 34 year old female. I am 34 weeks pregnant (second pregnancy). I have a benign dermoid cyst on my left ovary (4.5 cm). Its been there for 5 years, no change in size and my GP suggested no need of a laparoscopic removal since I didn't have any problems associated with it. But the gynaecologist has decided to do a salpingectomy oophorectomy, omentectomy. I am confused as to why cystectomy alone is not possible and why is omentectomy done? I am worried if there's something wrong and is there a complication to pregnancy? My OB and GYNAECOLOGIST both agreed on this since I have a planned csection and they are not doing any further tests. There is no history of cancer in my family. Please advise. Thank you.
Tue, 29 May 2018
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OBGYN,  's  Response
Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

Dermoid cysts are usually called as ovarian teratomas. According to studies, around 98% of dermoid cysts are benign. But your gynecologist may not want leave any chance of risk. As ovary containing dermoid cyst is being removed, that side fallopian tube may also need to be removed as that will be very near and sometimes attached to ovary.
Omentectomy is removing some part of omentum near the affected ovary. So that by doing histopathological examination(HPE) of all these tissues the possibility of malignancy is ruled out. Ovary HPE helps in ruling out the malignancy, whereas HPE of fallopian tube and omentum rules out the spread of tumor.

Hope I have answered your query. Let me know if I can assist you further.
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Why Is Omentectomy Done For A Dermoid Ovarian Cyst During Pregnancy?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Dermoid cysts are usually called as ovarian teratomas. According to studies, around 98% of dermoid cysts are benign. But your gynecologist may not want leave any chance of risk. As ovary containing dermoid cyst is being removed, that side fallopian tube may also need to be removed as that will be very near and sometimes attached to ovary. Omentectomy is removing some part of omentum near the affected ovary. So that by doing histopathological examination(HPE) of all these tissues the possibility of malignancy is ruled out. Ovary HPE helps in ruling out the malignancy, whereas HPE of fallopian tube and omentum rules out the spread of tumor. Hope I have answered your query. Let me know if I can assist you further.