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Αλέξανδρος Γ. Σφακιανάκης

Thursday, June 3, 2021

Malignant giant cell tumor in the left upper arm soft tissue of an adolescent: A case report

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World J Clin Cases. 2021 May 26;9(15):3704-3710. doi: 10.12998/wjcc.v9.i15.3704.

ABSTRACT

BACKGROUND: Giant cell tumor of soft tissue (GCT-ST) is an extremely rare low-grade soft tissue tumor that is originates in superficial tissue and rarely spreads deeper. GCT-ST has unpredictable behavior. It is mainly benign, but may sometimes become aggressive and potentially increase in size within a short period of time.

CASE SUMMARY: A 17-year-old man was suspected of having a fracture, based on radiography following left shoulder trauma. One month later, the swelling of the left shoulder continued to increase and the pain was obvious. Computed tomography (CT) revealed a soft tissue mass with strip-like calcifications in the left shoulder. The mass invaded the adjacent humerus and showed an insect-like area of destruction at the edge of the cortical bone of the upper humerus. The marrow cavity of the upper humerus was enlarged, and a sof t tissue density was seen in the medullary cavity. Thoracic CT revealed multiple small nodules beneath the pleura of both lungs. A bone scan demonstrated increased activity in the left shoulder joint and proximal humerus. The mass showed mixed moderate hypointensity and hyperintensity on T1-weighted images, and mixed hyperintensity on T2-weighted fat-saturated images. The final diagnosis of GCT-ST was confirmed by pathology.

CONCLUSION: GCT-STs should be considered in the differential diagnosis of soft tissue tumors and monitored for large increases in size.

PMID:34046473 | PMC:PMC8130095 | DOI:10.12998/wjcc.v9.i15.3704

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