Basal Cell Carcinoma Mimicking Dermatofibrosarcoma Protuberans: Case Report


  • Edgar Miguel Olmos Pérez 1Dermatology Surgeon, Hospital de San José, Fundación Universitaria de Ciencias de la Salud, Bogotá D. C., Colombia
  • Claudia Gonzalez Radiologist, Vice Chair of the Dermatologic Ultrasound Community and Member at the American Institute of Ultrasound in Medicine
  • María Camila Toscano-Madero Dermatology Resident, Hospital de San José, Fundación Universitaria de Ciencias de la Salud, Bogotá D. C., Colombia
  • Carolina Andrea Morales Cardenas Dermatology Resident, Hospital de San José, Fundación Universitaria de Ciencias de la Salud, Bogotá D. C., Colombia



Basal Cell Carcinoma, Carcinoma, Dermatofibrosarcoma Protuberans, High-Frequency Ultrasonography, Pathology


Introduction: Basal cell carcinoma (BCC) is the most common type of carcinoma worldwide. BCC development is
the result of a complex interaction between environmental, phenotypic and genetic factors. Presentation is highly
heterogeneous, presenting from superficial or nodular lesions with a good prognosis to very extensive lesions in atypical
locations clinically and radiologically mimicking other tumors. Case presentation: We present the case of a 34-year-old man
with no past medical history, with an asymptomatic nodule that was increasing in size on the right thigh. High-frequency
ultrasonography (HFUS) evaluation revealed an oval-shaped lesion with mixed echogenicity and posterior enhancement, with
Doppler showing increased vascularization. A biopsy of the lesion was performed with suspicion of dermatofibrosarcoma
protuberans, reporting unexpectedly an infiltrative basal cell carcinoma. The tumor was excised with free margins in the final
pathology report. Conclusions: HFUS is an increasingly utilized tool that can accompany the study of a malignant lesion.
Further studies are required to define more specific criteria for different skin tumors, always in conjunction with histology.


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2022-12-30 — Updated on 2023-10-17