Background. Cutaneous extraskeletal Ewing s sarcoma is rare, being seen principally in children. We report a case of cutaneous sarcoma in the sole of the foot in a child. Case report. A 9-yearold child with no medic...Background. Cutaneous extraskeletal Ewing s sarcoma is rare, being seen principally in children. We report a case of cutaneous sarcoma in the sole of the foot in a child. Case report. A 9-yearold child with no medical history of note was presenting a skin tumor for 3months on the heel of the right foot. This tumor was burgeoning and painful and measured 3.5cm in diameter; it was ulcerative at the surface and covered with a crust. Histological and immunohistochemical examinations confirmed the diagnosis of Ewing s sarcoma. Staging examinations proved negative and the patient underwent polychemotherapy, resulting in complete regression of the tumor. Comments. Until 1998, 37 cases of cutaneous and subcutaneous Ewing s sarcoma were reported, being seen in 21 girls and 16 boys. Mean age at diagnosis was 15 years and mean tumor size was 3 cm (range: 1 to 12 cm). The tumors were observed throughout the body, being seen in the sole of the foot in 2 cases. Confirmation of the diagnosis was made by histological examination (malignant proliferation of small round cells in the dermis), immunohistochemical examination (CD99+ ) and cytogenetic analysis (translocation between chromosomes 22 and 11). The prognosis for cutaneous Ewing s sarcoma appears more favorable than that of Ewing s sarcoma in bone. Of the 37 patients treated, 7 had metastases and 2 presented relapse. Treatment for cutaneous Ewing s sarcoma, though not codified, consists of polychemotherapy associated with surgery and/or radiotherapy.展开更多
文摘Background. Cutaneous extraskeletal Ewing s sarcoma is rare, being seen principally in children. We report a case of cutaneous sarcoma in the sole of the foot in a child. Case report. A 9-yearold child with no medical history of note was presenting a skin tumor for 3months on the heel of the right foot. This tumor was burgeoning and painful and measured 3.5cm in diameter; it was ulcerative at the surface and covered with a crust. Histological and immunohistochemical examinations confirmed the diagnosis of Ewing s sarcoma. Staging examinations proved negative and the patient underwent polychemotherapy, resulting in complete regression of the tumor. Comments. Until 1998, 37 cases of cutaneous and subcutaneous Ewing s sarcoma were reported, being seen in 21 girls and 16 boys. Mean age at diagnosis was 15 years and mean tumor size was 3 cm (range: 1 to 12 cm). The tumors were observed throughout the body, being seen in the sole of the foot in 2 cases. Confirmation of the diagnosis was made by histological examination (malignant proliferation of small round cells in the dermis), immunohistochemical examination (CD99+ ) and cytogenetic analysis (translocation between chromosomes 22 and 11). The prognosis for cutaneous Ewing s sarcoma appears more favorable than that of Ewing s sarcoma in bone. Of the 37 patients treated, 7 had metastases and 2 presented relapse. Treatment for cutaneous Ewing s sarcoma, though not codified, consists of polychemotherapy associated with surgery and/or radiotherapy.
