Ovarian metastasis
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An ovarian metastasis (also ovary with metastatic disease) is cancer in the ovary that arose elsewhere and spread to the ovary.
Generally
- Mostly Muellerian origin (uterus, fallopian tube) or pelvic peritoneum.
Common extramuellerian metastatic tumours:
- Breast.
- Gastrointestinal (GI) tract.
- Pseudomyxoma peritonei, usu. appendiceal origin.
- Krukenberg tumour = signet ring cell cancer with mucin production of GI origin.
Gross
Features favouring metastatic mucinous carcinoma (from the GI tract) over primary ovarian mucinous carcinoma:[1]
- Bilaterality - both ovaries involved.
- Small unilateral tumour size.
- <10 cm suggests metastasis.
- >13 cm = ovarian primary.
Microscopic
Features:
- Predominantly surface involvement and nodular at low power.
- +/-Signet ring cells (suggestive of GI or breast primary).
- Lymphovascular invasion.
Image
Ovarian metastasis - low mag. (WC/Nephron)
IHC
Ovarian tumours:
- Dipeptidase 1 (DPEP1) +ve.[2]
- CK7 +ve.
See also
References
- ↑ Yemelyanova, AV.; Vang, R.; Judson, K.; Wu, LS.; Ronnett, BM. (Jan 2008). "Distinction of primary and metastatic mucinous tumors involving the ovary: analysis of size and laterality data by primary site with reevaluation of an algorithm for tumor classification.". Am J Surg Pathol 32 (1): 128-38. doi:10.1097/PAS.0b013e3180690d2d. PMID 18162780.
- ↑ Okamoto, T.; Matsumura, N.; Mandai, M.; Oura, T.; Yamanishi, Y.; Horiuchi, A.; Hamanishi, J.; Baba, T. et al. (Feb 2011). "Distinguishing primary from secondary mucinous ovarian tumors: an algorithm using the novel marker DPEP1.". Mod Pathol 24 (2): 267-76. doi:10.1038/modpathol.2010.204. PMID 21076463.