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Meigs' Syndrome
The three cardinal features of Meigs' syndrome are:
- A benign ovarian tumour
- Ascites and pleural effusion
- If the tumour is resected, the fluid resolves
The ovarian tumour is usually a fibroma but may be a thecoma, cystadenoma, or granulosa cell tumour. When the histology is other than fibroma, it is sometimes referred to as pseudo-Meigs' syndrome. There would appear to be an inflammatory reaction1 that causes the peritoneal and pleural fluid but the underlying aetiology is unclear. Even the source of the fluid is unclear. A study of ovarian tumours with ascites found that only those larger than 10 cm in diameter with a myxoid component to the stroma were associated with ascites. These authors suggested that this favours secretion of fluid from the tumour rather than the peritoneum or pleura.2 The tumour marker CA 125 is often elevated but usually less so than in malignancy. This is localized on the peritoneum rather than the ovary.3 The mechanism by which this tumour induces ascites and pleural effusion remains obscure.
Meig's syndrome accounts for about 1% of ovarian tumours. It is very uncommon before 40 years of age and becomes more frequent as the years progress but there are some reports of it arising from teratomas or cystadenomas in pre-pubertal girls.
Most features are related to ascites and pleural effusion but before the menopause there may be menstrual symptoms too.
- Fatigue
- Dyspnoea, initially on exertion
- Swollen abdomen with associated weight gain
- Non-productive cough
- Amenorrhoea or irregular menstruation
Examination
- Reduction in lung capacity may produce tachypnoea and tachycardia
- Examination of the chest will reveal dullness to percussion over the effusion. There will be decreased breath sounds and decreased tactile vocal fremitus.
- The effusion tends to be right sided but can be bilateral. There appears to be no adequate explanation for this unilaterality. A large right sided effusion will displace the mediastinum to the left with deviation of the trachea to the left and displacement of the apex beat.
- Abdominal examination may reveal a tumour arising from the pelvis but this may be obscured by ascites. The features of ascites include a fullness of the flanks and shifting dullness.
- Pelvic examination may reveal an ovarian mass.
The main differential diagnosis is with a malignant ovarian tumour. They are much more common than Meig's syndrome and tend to produce profuse ascites with a high protein content. Pleural effusion is less common unless due to pulmonary metastases.
Other considerations include:
- Other cancers including colon4 and lung
- Tuberculosis
- Nephrotic syndrome
- Congestive heart failure
- Cirrhosis
- Check urine for protein
- Routine blood tests would include FBC, U&E, LFTs including plasma proteins
- CA 125 is a tumour marker that tends to be mildly elevated in Meig's syndrome and markedly elevated in ovarian malignancy. This is not reliable and cases are described with very high CA 125 and normal levels.5 It can also be normal in ovarian malignancy
- CXR and lateral will show the degree of pulmonary effusion
- Abdominal ultrasound will demonstrate the ascites and should outline the ovarian tumour too. For ovarian tumours, MRI is the first line after CT but CT tends not to be used much
- Paracentesis and aspiration of pleural fluid serves two purposes. It helps to relieve symptoms and fluid should be sent for cytology. This is very important in distinguishing malignant ascites from Meig's syndrome. The fluid tends to have the features of a transudate although sometimes it does appear to be an exudate. In ovarian carcinoma the protein content is usually high. Pleural and ascitic fluid should also be examined for protein, glucose, amylase, cell count, organisms and AAFB if indicated.
- If congestive heart failure is suspected, ECG will be required. Echocardiogram is indicated only if the ECG is abnormal.
- Pseudo-Meigs' syndrome is characterized by pleural effusion, ascites, and benign ovarian tumours other than fibromas. These benign tumours may include those of the fallopian tube or uterus and mature teratomas, struma ovarii, and ovarian leiomyomas. This terminology sometimes includes ovarian or metastatic gastrointestinal malignancies too.
- Atypical Meigs' syndrome has a benign pelvic mass with a right-sided pleural effusion but without ascites. This is rare but as in Meigs' syndrome, pleural effusion resolves after resection of the tumour.
- Pseudo-pseudo Meigs' syndrome may occur in patients with systemic lupus erythematosus and enlarged ovaries.
The essential management is surgical removal of the tumour but before operation, aspiration of pleural effusion and ascites should be performed to improve pulmonary function.
The operation includes full laparotomy to exclude other causes of malignancy including bowel.
- In women of reproductive age a unilateral salpingo-oophorectomy is usually performed.
- In girls who are before the menarche, wedge resection may be preferred if feasible.
- After the menopause an operation of total abdominal hysterectomy with bilateral salpingo-oophorectomy is usual.
Within weeks to months of operation the ascites and pleural effusion resolve and the CA 125 returns to normal. Postoperative resolution of the fluid is part of the definition of the disease. As it is a benign tumour the prognosis is excellent. If there is functioning ovarian tissue, fertility should be preserved.
In 1934, Salmon described the association of pleural effusion with benign pelvic tumours. In 1936, Meigs and Cass6 described 7 cases of ovarian fibromas associated with ascites and pleural effusion. In 1954, Meigs proposed limiting the diagnosis of Meigs' syndrome to benign and solid ovarian tumours with ascites and pleural effusion, and the condition that removal of the tumour cures the patient without recurrence.
Joe Vincent Meigs was an American Obstetrician and Gynaecologist who was born in 1892 and died in 1963. He was Professor at the University of Harvard and the Chair in Gynaecology has since been designated the "Joe Vincent Meigs' Professor of Gynecology".
Another name that is sometimes associated is Demons' syndrome after Albert Demons (1842-1920) who described it in France in 1887.
However, the first report is said to have involved Dame Mary Page, wife of Sir Gregory Page, Bunhill Fields, England, who died in 1728, in her 56th year.7
Document References
- Abramov Y, Anteby SO, Fasouliotis SJ, et al; The role of inflammatory cytokines in Meigs' syndrome.; Obstet Gynecol. 2002 May;99(5 Pt 2):917-9. [abstract]
- Samanth KK, Black WC 3rd; Benign ovarian stromal tumors associated with free peritoneal fluid.; Am J Obstet Gynecol. 1970 Jun 15;107(4):538-45.
- Lin JY, Angel C, Sickel JZ; Meigs syndrome with elevated serum CA 125.; Obstet Gynecol. 1992 Sep;80(3 Pt 2):563-6. [abstract]
- Feldman ED, Hughes MS, Stratton P, et al; Pseudo-Meigs' syndrome secondary to isolated colorectal metastasis to ovary: a case report and review of the literature.; Gynecol Oncol. 2004 Apr;93(1):248-51. [abstract]
- Moran-Mendoza A, Alvarado-Luna G, Calderillo-Ruiz G, et al; Elevated CA125 level associated with Meigs' syndrome: case report and review of the literature.; Int J Gynecol Cancer. 2006 Jan-Feb;16 Suppl 1:315-8. [abstract]
- Meigs JV, Cass JW; Fibroma of the ovary with ascites and hydrothorax: with a report of seven cases.; Am J Obstet Gynecol 1937; 33: 249-267.
- www.whonamedit.com; Meigs syndrome
Internet and Further Reading
- Lessnau K; emedicine June 2006
- www.whonamedit.com; Joe Vincent Meigs
DocID: 1256
Document Version: 21
DocRef: bgp1261
Last Updated: 12 Apr 2007
Review Date: 11 Apr 2009
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