Ovary tumor
Other tumors not specific to ovary
Paraganglioma


Topic Completed: 1 December 2014

Revised: 14 February 2019

Copyright: 2003-2019, PathologyOutlines.com, Inc.

PubMed Search: Paraganglioma [title] ovary
Page views in 2018: 317
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Cite this page: Gupta N Paraganglioma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/ovarytumorparaganglioma.html. Accessed March 21st, 2019.
Definition / general
  • Can be primary or metastatic
  • Primary ovarian paragangliomas are very rare
  • Commonly present with hypertension
  • Potentially aggressive tumors
Epidemiology
Sites
Clinical features
  • Abdominal discomfort, adnexal mass or hypertension
  • Potentially aggressive - 1 case had extraovarian disease at surgery
Radiology description
  • USG: solid cytic ovarian mass
Case reports
Treatment
  • Surgery
  • Long term follow up is recommended
Gross description
  • Large solid mass (8-22 cm) with tan yellow to brown cut surface
Microscopic (histologic) description
  • Well circumscribed but unencapsulated
  • Closely packed nests of tumor cells in zellballen pattern
  • Polygonal cells with abundant eosinophilic granular cytoplasm and speckled chromatin
  • Mitotic activity is low (0-2/10 hpf)
Microscopic (histologic) images

Nests composed of tumor cells

Chromogranin



Images hosted on other servers:
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Mediastinum tumor: H&E and S100

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Various images, location unknown

Positive stains
Negative stains
  • EMA, PanCK, Keratin
Electron microscopy description
  • Dense core neurosecretory granules devoid of desmosomes
Differential diagnosis
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