Leiomyosarcoma causes: Difference between revisions

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== Overview: ==
== Overview: ==
Leimoyosarcoma is a very rare disease which involves uterine.  
Leimoyosarcoma is a malignant aggressive form of soft tissue sarcoma which can invlove muscle cells, vessels, fats.It is a very rare disease which involves uterine smooth muscle cells. Exact cause of leiomyosarcoma is not well understood but there is theory which finds leiomyosarcoma, arising from benign tumor of uterine smooth muscle, called leiomyoma. It is believed that it may arie denovo or due to genetic alterations.


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Revision as of 18:16, 27 February 2019

Overview:

Leimoyosarcoma is a malignant aggressive form of soft tissue sarcoma which can invlove muscle cells, vessels, fats.It is a very rare disease which involves uterine smooth muscle cells. Exact cause of leiomyosarcoma is not well understood but there is theory which finds leiomyosarcoma, arising from benign tumor of uterine smooth muscle, called leiomyoma. It is believed that it may arie denovo or due to genetic alterations.


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Causes:

Exact cause of leiomyosarcoma is not clearly unerstood, however following points are considered regarding causes[1]:

  • Although not proven but some reasearchers believes that it could be a malignant transformation of the fibroid( leiomyoma).
  • It may arise denovo or can be due to the genomic instability. However molecular mechanism of tumorigenesis driven by genomic and genetic aberration is yet to be elucidated.
  • Over expression of the protooncogene C-myc is seen in 50% of the cases.
  • Retinobalstoma gene discrepancies are also seen in 90% of cases.
  • P16 chromosomal deletion causes loss of tumor suppression and so is involved in the development of leiomyosarcoma.
  • P53 gene mutation is also frequently seen in uterine leiomyosarcoma.

References

  1. Crystal JS, Korderas K, Schwartzberg D, Tizio SC, Zheng M, Parker G (2018). "Primary Leiomyosarcoma of the Colon: A Report of Two Cases, Review of the Literature, and Association with Immunosuppression for IBD and Rheumatoid Arthritis". Case Rep Surg. 2018: 6824643. doi:10.1155/2018/6824643. PMC 5892970. PMID 29780656.


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