Clear-cell sarcomaclear cell sarcoma, clear cell sarcoma pathology
Clear-cell sarcoma formerly known as malignant melanoma of the soft parts is a rare form of cancer called sarcoma1 It is known to occur mainly in the soft tissues and dermis Rare forms were thought to occur in the gastrointestinal tract before they were discovered to be different and redesignated as GNET
Recurrence is common2
It has been associated with both EWSR1-ATF1 and EWSR1-CREB1 fusion transcripts3
Clear cell sarcoma of the soft tissues in adults is not related to the pediatric tumor known as clear cell sarcoma of the kidney4
- 1 Pathology
- 2 Diagnosis
- 3 Signs and symptoms
- 4 Prognosis
- 5 Treatment
- 6 See also
- 7 References
Despite the name clear cell sarcoma, the tumor cells do not necessarily need to have clear cytoplasm The lesion has a distinctly nested growth pattern with a mixture of spindle, epithelioid and tumor giant cells Approximately two thirds of the tumors contain melanin pigment Clear cell sarcoma, similar to melanoma, has consistent positivity for S-100, HMB-45, and MITF5
Imaging studies such as X-rays, computed tomography scans, or MRI may be required to diagnose clear-cell sarcoma together with a physical exam Normally a biopsy is also necessary Furthermore, a chest CT, a bone scan and positron emission tomography PET may be part of the tests in order to evaluate areas where metastases occur6
Signs and symptomsedit
It presents as a slow growing mass that especially affects tendons and aponeuroses and it is deeply situated Patients often perceive it as a lump or hard mass It causes either pain or tenderness but only until it becomes large enough This kind of tumor is commonly found in the extremities especially around the knee, feet and ankle Patients diagnosed with clear cell sarcoma are usually between the ages of 20 and 401
When the tumor is large and there is presence of necrosis and local recurrence, the prognosis is poor Presence of metastasis occurs in more than 50% cases and the common places of its occurrence are the bone, lymph node and lungs7 Five-year survival rates, which are reported to be between 50-65%, can be misleading because the disease is prone to late metastasis or recurrence Ten and twenty-year survival rates are 33% and 10%, respectively1
Treatment depends upon the site and the extent of the disease Clear cell sarcoma is usually treated with surgery in the first place in order to remove the tumor The surgical procedure is then followed by radiation and sometimes chemotherapy8 Few cases of clear cell sarcoma respond to chemotherapy1 Several types of targeted therapy that may be of benefit to clear cell sarcoma patients are currently under investigation1
- Clear-cell sarcoma of the kidney
- List of cutaneous conditions
- Hyalinizing clear cell carcinoma - has the same chromosomal translocation
- ^ a b c d e Barry, G; Nielsen, T June 2012 "Clear Cell Sarcoma of Soft Tissue" ESUN 9 3 Retrieved 15 June 2012
- ^ Malchau SS, Hayden J, Hornicek F, Mankin HJ May 2007 "Clear cell sarcoma of soft tissues" J Surg Oncol 95 6: 519–22 PMID 17192915 doi:101002/jso20730
- ^ Hisaoka M, Ishida T, Kuo TT, et al March 2008 "Clear cell sarcoma of soft tissue: a clinicopathologic, immunohistochemical, and molecular analysis of 33 cases" Am J Surg Pathol 32 3: 452–60 PMID 18300804 doi:101097/PAS0b013e31814b18fb
- ^ Poppe B, Forsyth R, Dhaene K, Speleman F Soft tissue tumors: Clear cell sarcoma Atlas Genet Cytogenet Oncol Haematol November 2002
- ^ "Clear cell sarcoma" Pathology Outlines Retrieved 26 May 2015
- ^ "Diagnosis" Retrieved 2010-06-29
- ^ "Clear Cell Sarcoma of Tendons and Aponeuroses" Retrieved 2010-06-29
- ^ "Treatment" Retrieved 2010-06-29
|Not otherwise specified||
|Connective tissue neoplasm||
|Complex mixed and stromal||
clear cell sarcoma, clear cell sarcoma cancer, clear cell sarcoma histology, clear cell sarcoma in children, clear cell sarcoma of soft parts, clear cell sarcoma of tendons and aponeuroses, clear cell sarcoma of the kidney, clear cell sarcoma pathology, clear cell sarcoma prognosis, clear cell sarcoma translocation
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