Superficial Clear Cell Sarcoma (Melanoma of Soft Parts) of the Large toe in an 80-Year-Old Female With a Rare Cytogenetic Translocation
| Autor: | Regina Zambrano, Emily R Davis, Richard L. Miller, Michael R. Heaphy, John Moesch |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Pathology sarcoma Soft Tissue Neoplasm melanoma of soft parts translocation Chromosomal translocation Dermatology 030204 cardiovascular system & hematology chromosomal translocation 03 medical and health sciences 0302 clinical medicine melanoma medicine clear cell sarcoma business.industry Melanoma fungi General Engineering medicine.disease superficial sarcoma Oncology immunohistochemistry Immunohistochemistry Histopathology Clear-cell sarcoma Sarcoma Differential diagnosis business 030217 neurology & neurosurgery |
| Zdroj: | Cureus |
| ISSN: | 2168-8184 |
| DOI: | 10.7759/cureus.11719 |
| Popis: | We present a case of clear cell sarcoma (CCS) on the left large toe of an 80-year-old female. CCS, also known as “melanoma of soft parts,” is a rare soft tissue neoplasm that exhibits melanocytic differentiation. Most cases occur on the distal extremities of young female adults. CCS shares histopathologic and immunohistochemical features with malignant melanoma that cause diagnostic difficulties distinguishing between these entities; therefore, cytogenetic studies of specific translocations are paramount in obtaining the correct diagnosis. The majority of CCS cases reveal a t(12;22)(q13;q12) EWSR1/ATF1 translocation, while a rare subset of CCS demonstrate a t(2;22) (q32:q12) EWS/CREB1 translocation. Our patient presented with a 50-year history of a nodule on the dorsum of her left large toe, with increasing size and tenderness over the past nine months. Histopathology and immunoperoxidase staining indicated CCS as a differential diagnosis. Cytogenetic analysis revealed a translocation in t(2;22) (q32;q12) resulting in the EWSR1/CREB1 gene, confirming a diagnosis of CCS. The translocation, histologic location, and long-standing clinical course exhibited in this case are exceptionally rare, and we hope to inform dermatologists of an uncommon presentation of CCS in an unexpected age group. |
| Databáze: | OpenAIRE |
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