Ovarian metastasis

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An ovarian metastasis (also ovary with metastatic disease and metastatic ovarian disease) is cancer in the ovary that arose elsewhere and spread to the ovary.

Ovarian metastasis
Diagnosis in short

Ovary with a metastasis from breast carcinoma. H&E stain.

LM predominantly surface involvement and nodular (especially at low power), +/-signet ring cells (suggestive of GI or breast primary), lymphovascular invasion
LM DDx ovarian primary tumours - esp. ovarian mucinous carcinoma, serous carcinoma of the ovary, endometrioid carcinoma of the ovary
IHC dependent on primary site
Gross classically bilateral masses <10 cm
Site ovary - see ovarian tumours

Clinical history +/-malignancy elsewhere
Signs +/-abdominal mass
Symptoms +/-pain, +/-abdominal distension
Blood work serology suggestive of other primary, e.g. elevated CEA
Radiology adnexal mass/ovarian mass
Prognosis poor
Clin. DDx ovarian primary
Treatment dependent on primary - often chemotherapy and radiation, occasionally de-bulking (surgery)

Generally

Common extramuellerian metastatic tumours:

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:

Image

IHC

Ovarian tumours:

  • Dipeptidase 1 (DPEP1) +ve.[2]
  • CK7 +ve.

See also

References

  1. 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.
  2. 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.