Difference between revisions of "Peritoneal inclusion cyst"

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#redirect [[Gynecologic_pathology#Peritoneal_inclusion_cyst]]
'''Peritoneal inclusion cyst''' is a relatively uncommon benign pathology of the peritoneum.<ref name=pmid19386139>{{Cite journal  | last1 = Vallerie | first1 = AM. | last2 = Lerner | first2 = JP. | last3 = Wright | first3 = JD. | last4 = Baxi | first4 = LV. | title = Peritoneal inclusion cysts: a review. | journal = Obstet Gynecol Surv | volume = 64 | issue = 5 | pages = 321-34 | month = May | year = 2009 | doi = 10.1097/OGX.0b013e31819f93d4 | PMID = 19386139 }}</ref>


[[Category:Diagnosis]]
It is also known as '''benign multicystic mesothelioma'''; it should '''not''' be confused with ''[[malignant mesothelioma]]'' and ''[[benign papillary mesothelioma]]''.
 
It may referred to as '''inflammatory cyst of the peritoneum''' or '''[[mesothelial inclusion cyst]]'''.{{fact}}
 
'''Multilocular peritoneal inclusion cyst''' redirect here.
==General==
*Usually conservative management.
*Serum CA-125 usually low.
*May occur in men.<ref name=pmid12239771>{{Cite journal  | last1 = Cavallaro | first1 = A. | last2 = Murazio | first2 = M. | last3 = Modugno | first3 = P. | last4 = Vona | first4 = A. | last5 = Revelli | first5 = L. | last6 = Potenza | first6 = AE. | last7 = Colli | first7 = R. | title = Benign multicystic mesothelioma of the peritoneum: a case report. | journal = Chir Ital | volume = 54 | issue = 4 | pages = 569-72 | month =  | year =  | doi =  | PMID = 12239771 }}</ref>
 
==Gross==
Features:<ref name=pmid3789251>{{Cite journal  | last1 = McFadden | first1 = DE. | last2 = Clement | first2 = PB. | title = Peritoneal inclusion cysts with mural mesothelial proliferation. A clinicopathological analysis of six cases. | journal = Am J Surg Pathol | volume = 10 | issue = 12 | pages = 844-54 | month = Dec | year = 1986 | doi =  | PMID = 3789251 }}</ref>
*Multilocular thin-walled cysts containing serous fluid +/- blood.
**Occasionally unilocular.
*May be up to 15 cm.
*Can be adherent to the [[ovary]].
 
==Microscopic==
Features:<ref name=pmid19386139/><ref name=pmid18349460>{{Cite journal  | last1 = Levy | first1 = AD. | last2 = Arnáiz | first2 = J. | last3 = Shaw | first3 = JC. | last4 = Sobin | first4 = LH. | title = From the archives of the AFIP: primary peritoneal tumors: imaging features with pathologic correlation. | journal = Radiographics | volume = 28 | issue = 2 | pages = 583-607; quiz 621-2 | month =  | year =  | doi = 10.1148/rg.282075175 | PMID = 18349460 | URL = http://radiographics.rsna.org/content/28/2/583.full}}</ref>
*Thin-walled, irregular-shaped, cysts - unicystic or multicystic.
**Mesothelial lining +/- squamous metaplasia.<ref name=pmid2766227>{{Cite journal  | last1 = Ross | first1 = MJ. | last2 = Welch | first2 = WR. | last3 = Scully | first3 = RE. | title = Multilocular peritoneal inclusion cysts (so-called cystic mesotheliomas). | journal = Cancer | volume = 64 | issue = 6 | pages = 1336-46 | month = Sep | year = 1989 | doi =  | PMID = 2766227 }}
</ref>
**Eosinophilic fluid.
 
DDx:
*[[Ovarian serous borderline tumour]].
*[[Ovarian serous carcinoma]].
*[[Primary peritoneal serous carcinoma]].
*Primary peritoneal [[malignant mesothelioma]].
 
Images:
*[http://radiographics.rsna.org/content/28/2/583/F30.expansion.html Multicystic mesothelioma (rsna.org)].
*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3445851/figure/F4/ Benign multicystic peritoneal mesothelioma (nih.gov)].<ref name=pmid22583977>{{Cite journal  | last1 = Takemoto | first1 = S. | last2 = Kawano | first2 = R. | last3 = Honda | first3 = K. | last4 = Nakazono | first4 = A. | last5 = Shimamatsu | first5 = K. | title = Benign multicystic peritoneal mesothelioma mimicking recurrence of an ovarian borderline tumor: a case report. | journal = J Med Case Rep | volume = 6 | issue = 1 | pages = 126 | month =  | year = 2012 | doi = 10.1186/1752-1947-6-126 | PMID = 22583977 }}</ref>
 
==IHC==
Features:<ref name=pmid22583977/>
*Calretinin +ve.
*WT-1 +ve.
 
==Sign out==
<pre>
Greater Omentum, Excision:
    - Multilocular peritoneal inclusion cyst with reactive changes.
    - Adipose tissue with necrosis.
    - NEGATIVE for malignancy.
</pre>
 
==See also==
*[[Peritoneum]].
 
==References==
{{Reflist|1}}
 
[[Category:Gynecologic pathology]]

Latest revision as of 19:05, 29 April 2022

Peritoneal inclusion cyst is a relatively uncommon benign pathology of the peritoneum.[1]

It is also known as benign multicystic mesothelioma; it should not be confused with malignant mesothelioma and benign papillary mesothelioma.

It may referred to as inflammatory cyst of the peritoneum or mesothelial inclusion cyst.[citation needed]

Multilocular peritoneal inclusion cyst redirect here.

General

  • Usually conservative management.
  • Serum CA-125 usually low.
  • May occur in men.[2]

Gross

Features:[3]

  • Multilocular thin-walled cysts containing serous fluid +/- blood.
    • Occasionally unilocular.
  • May be up to 15 cm.
  • Can be adherent to the ovary.

Microscopic

Features:[1][4]

  • Thin-walled, irregular-shaped, cysts - unicystic or multicystic.
    • Mesothelial lining +/- squamous metaplasia.[5]
    • Eosinophilic fluid.

DDx:

Images:

IHC

Features:[6]

  • Calretinin +ve.
  • WT-1 +ve.

Sign out

Greater Omentum, Excision:
     - Multilocular peritoneal inclusion cyst with reactive changes.
     - Adipose tissue with necrosis.
     - NEGATIVE for malignancy.

See also

References

  1. ↑ 1.0 1.1 Vallerie, AM.; Lerner, JP.; Wright, JD.; Baxi, LV. (May 2009). "Peritoneal inclusion cysts: a review.". Obstet Gynecol Surv 64 (5): 321-34. doi:10.1097/OGX.0b013e31819f93d4. PMID 19386139.
  2. ↑ Cavallaro, A.; Murazio, M.; Modugno, P.; Vona, A.; Revelli, L.; Potenza, AE.; Colli, R.. "Benign multicystic mesothelioma of the peritoneum: a case report.". Chir Ital 54 (4): 569-72. PMID 12239771.
  3. ↑ McFadden, DE.; Clement, PB. (Dec 1986). "Peritoneal inclusion cysts with mural mesothelial proliferation. A clinicopathological analysis of six cases.". Am J Surg Pathol 10 (12): 844-54. PMID 3789251.
  4. ↑ Levy, AD.; Arnáiz, J.; Shaw, JC.; Sobin, LH.. "From the archives of the AFIP: primary peritoneal tumors: imaging features with pathologic correlation.". Radiographics 28 (2): 583-607; quiz 621-2. doi:10.1148/rg.282075175. PMID 18349460.
  5. ↑ Ross, MJ.; Welch, WR.; Scully, RE. (Sep 1989). "Multilocular peritoneal inclusion cysts (so-called cystic mesotheliomas).". Cancer 64 (6): 1336-46. PMID 2766227.
  6. ↑ 6.0 6.1 Takemoto, S.; Kawano, R.; Honda, K.; Nakazono, A.; Shimamatsu, K. (2012). "Benign multicystic peritoneal mesothelioma mimicking recurrence of an ovarian borderline tumor: a case report.". J Med Case Rep 6 (1): 126. doi:10.1186/1752-1947-6-126. PMID 22583977.
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