Brenner tumour

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The Brenner tumour, abbreviated BT, is an ovarian tumour in the epithelial group of ovarian tumours.

Brenner tumour
Diagnosis in short

Brenner tumour. H&E stain.

LM nests of transitional epithelium with cells that have a "coffee bean nucleus" (elliptical shape (nucleus), nuclear groove along long axis), distinct nucleoli, moderate-to-abundant gray/pale cytoplasm, dense fibrous stroma around nests
LM DDx granulosa cell tumour, ovarian fibroma, thecoma
IHC AR +ve, calretinin -ve
Site ovary (see ovarian tumours), fallopian tube

Prevalence uncommon
Prognosis usu. good, may be poor

General

Epidemiology

  • Mostly benign clinical course.
  • Thought to arise from Walthard cell rest.
  • Frequently an incidental finding, i.e. oophorectomy was done for another reason.
  • May be malignant.

Gross

Features:[4]

  • Classically solid, well-circumscribed, light yellow.
  • May be cystic.

Note:

  • Borderline tumours classically solid and cystic with papillary projections into the cystic component.[4]

Microscopic

Features:

  • Nests of transitional epithelium with cells that have:[5]
    • A "coffee bean nucleus".
      • Elliptical shape (nucleus).
      • Nuclear grooves.[6]
      • Distinct nucleoli.
    • Moderate-to-abundant gray/pale cytoplasm.
  • Dense fibrous stroma around nests.

Notes:

DDx:

Images

IHC

Features:[7]

  • AR +ve.
  • Calretinin -ve.
    • Surrounding stroma +ve.

See also

References

  1. Bilici, A.; Inanc, M.; Ulas, A.; Akman, T.; Seker, M.; Babacan, NA.; Inal, A.; Bal, O. et al. (2013). "Clinical and pathologic features of patients with rare ovarian tumors: multi-center review of 167 patients by the anatolian society of medical oncology.". Asian Pac J Cancer Prev 14 (11): 6493-9. PMID 24377556.
  2. Ali, RH.; Seidman, JD.; Luk, M.; Kalloger, S.; Gilks, CB. (Nov 2012). "Transitional cell carcinoma of the ovary is related to high-grade serous carcinoma and is distinct from malignant brenner tumor.". Int J Gynecol Pathol 31 (6): 499-506. doi:10.1097/PGP.0b013e31824d7445. PMID 23018212.
  3. Kuhn, E.; Ayhan, A.; Shih, IeM.; Seidman, JD.; Kurman, RJ. (Dec 2013). "Ovarian Brenner tumour: a morphologic and immunohistochemical analysis suggesting an origin from fallopian tube epithelium.". Eur J Cancer 49 (18): 3839-49. doi:10.1016/j.ejca.2013.08.011. PMID 24012099.
  4. 4.0 4.1 Borah, T.; Mahanta, RK.; Bora, BD.; Saikia, S. (Jan 2011). "Brenner tumor of ovary: An incidental finding.". J Midlife Health 2 (1): 40-1. doi:10.4103/0976-7800.83273. PMC 3156501. PMID 21897739. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3156501/.
  5. Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease (7th ed.). St. Louis, Mo: Elsevier Saunders. pp. 1098. ISBN 0-7216-0187-1.
  6. URL: http://www.pathologyoutlines.com/ovarytumor.html#brennergen. Accessed on: 8 February 2011.
  7. Kuhn, E.; Ayhan, A.; Shih, IeM.; Seidman, JD.; Kurman, RJ. (Dec 2013). "Ovarian Brenner tumour: a morphologic and immunohistochemical analysis suggesting an origin from fallopian tube epithelium.". Eur J Cancer 49 (18): 3839-49. doi:10.1016/j.ejca.2013.08.011. PMID 24012099.