Serous tubal intraepithelial carcinoma

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Serous tubal intraepithelial carcinoma, abbreviated STIC[1] (pronounced stick), is considered to be the precursor of serous carcinoma.

It is also known as tubal intraepithelial carcinoma.

General

  • Considered the precursor lesion for tubal serous carcinoma.[2]
  • Seen in ~6% of prophylactic salpingo-oophorectomies in BRCA-mutation carriers.[3]

Gross

  • Not apparent on gross.
  • Usually at the fimbriated end of the tube.

Microscopic

Features:[4]

  • Discrete papillary growth - low power.
  • Formal criteria - need 3 or more:
    1. Atypical chromatin pattern.
    2. Nuclear enlargement.
    3. Nuclear pleomorphism.
    4. Nuclear moulding.
    5. Loss of nuclear polarity or epithelial stratification.

Notes:

  • At low power STIC is usually tall cells that are too blue.
  • Cilia suggest benign.

DDx:

  • Atypical tubal lesion (STIL or TILT) - lack proliferation.[citation needed]

Images

IHC

Features:[1]

  • p53 +ve.
  • Ki-67 increased ~10%. (???)
  • p16 +ve.[4]

See also

References

  1. 1.0 1.1 Visvanathan, K.; Vang, R.; Shaw, P.; Gross, A.; Soslow, R.; Parkash, V.; Shih, IeM.; Kurman, RJ. (Dec 2011). "Diagnosis of serous tubal intraepithelial carcinoma based on morphologic and immunohistochemical features: a reproducibility study.". Am J Surg Pathol 35 (12): 1766-75. doi:10.1097/PAS.0b013e31822f58bc. PMID 21989347.
  2. Lee, Y.; Miron, A.; Drapkin, R.; Nucci, MR.; Medeiros, F.; Saleemuddin, A.; Garber, J.; Birch, C. et al. (Jan 2007). "A candidate precursor to serous carcinoma that originates in the distal fallopian tube.". J Pathol 211 (1): 26-35. doi:10.1002/path.2091. PMID 17117391.
  3. Mingels MJ, Roelofsen T, van der Laak JA, et al. (October 2012). "Tubal epithelial lesions in salpingo-oophorectomy specimens of BRCA-mutation carriers and controls". Gynecol. Oncol. 127 (1): 88–93. doi:10.1016/j.ygyno.2012.06.015. PMID 22710074.
  4. 4.0 4.1 4.2 Sehdev, AS.; Kurman, RJ.; Kuhn, E.; Shih, IeM. (Jun 2010). "Serous tubal intraepithelial carcinoma upregulates markers associated with high-grade serous carcinomas including Rsf-1 (HBXAP), cyclin E and fatty acid synthase.". Mod Pathol 23 (6): 844-55. doi:10.1038/modpathol.2010.60. PMID 20228782.
  5. 5.0 5.1 5.2 Kurman, RJ.; Shih, IeM. (Jul 2011). "Molecular pathogenesis and extraovarian origin of epithelial ovarian cancer--shifting the paradigm.". Hum Pathol 42 (7): 918-31. doi:10.1016/j.humpath.2011.03.003. PMID 21683865.
  6. Gross, AL.; Kurman, RJ.; Vang, R.; Shih, IeM.; Visvanathan, K. (2010). "Precursor lesions of high-grade serous ovarian carcinoma: morphological and molecular characteristics.". J Oncol 2010: 126295. doi:10.1155/2010/126295. PMID 20445756.
  7. URL: http://www.ovariancancerprevention.org/?page_id=191. Accessed on: 13 May 2014.

External links