Why the study?
Fibrosarcoma of bone is a rare malignant spindle cell tumor.
Fibrosarcoma of the bone should be considered when a lesion exhibits a black signal intensity component on MRI with acrolysis.
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May support considering fibrosarcoma for bone lesions with black MRI signal and acrolysis; leaves open need for validation.
INTRODUCTION: Fibrosarcoma of bone is a rare malignant spindle cell tumor. CASE STUDY: Herein, we present a case of fibrosarcoma in a 40-year-old male who was presented to the clinic with left-sided great toe pain for 20 years. Simple radiographs showed acrolysis at the distal phalanx of great toe. Magnetic resonance imaging (MRI) revealed a 1.5 cm sized heterogenous high signal intensity mass on T2-weighted images and iso signal intensity on T1- weighted images. Dorsal and distal portion of the mass showed markedly dark signal intensity on T1 and T2-weighted images. CONCLUSION: In an enhanced image, the mass showed heterogenous enhancement. Surgical removal was performed and pathologic analysis revealed fibrosarcoma. Although extremely rare, fibrosarcoma of the bone should be kept in mind as a possibility when a lesion exhibits a black signal intensity component on an MRI with acrolysis.
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Park et al. (2023) studied this question.
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