case_images: PMC10858792_01
case_images: Clinical image showing a mass developed in the posterolateral aspect of the right forearm
case_images: cureus-0016-00000052118-i01.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i01.jpg
case_images: FIG1
case_images: Axillary lymph node evaluation yielded normal results (Figure 1).
case_images: Anteroposterior X-ray view of the right forearm
case_images: cureus-0016-00000052118-i02.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i02.jpg
case_images: FIG2
case_images: X-rays showed no calcifications or bone abnormalities (Figure 2).
case_images: Axial proton density fat-saturated MRI view of the right forearm revealing a mass in the right forearm's posterolateral aspect
case_images: cureus-0016-00000052118-i03.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i03.jpg
case_images: FIG3
case_images: The mass exerted pressure on the radial carpal extensor muscle, with no bone abnormalities noted, suggesting a solitary fibrous tumor (Figures 3-5).
case_images: Sagittal T1 MRI view of the right forearm
case_images: cureus-0016-00000052118-i04.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i04.jpg
case_images: FIG4
case_images: The mass exerted pressure on the radial carpal extensor muscle, with no bone abnormalities noted, suggesting a solitary fibrous tumor (Figures 3-5).
case_images: Sagittal T1 gadolinium MRI view of the right forearm
case_images: cureus-0016-00000052118-i05.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i05.jpg
case_images: FIG5
case_images: The mass exerted pressure on the radial carpal extensor muscle, with no bone abnormalities noted, suggesting a solitary fibrous tumor (Figures 3-5).
case_images: Histopathologic image of the biopsy. A photomicrograph of the lesion shows clusters of cavernous spaces filled with blood, separated by connective tissue septa. The endothelial cells lining the blood vessels are flattened with no evident nuclear atypia (H&E, x200).
case_images: cureus-0016-00000052118-i06.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i06.jpg
case_images: FIG6
case_images: Subsequently, we performed a biopsy, leading to the diagnosis of the cavernous hemangioma (Figure 6).
case_images: The macroscopic aspect of the tumor after excision. The brownish color reflects the vascular structure of the tumor.
case_images: cureus-0016-00000052118-i07.jpg
case_images: PMC10858792_01_cureus-0016-00000052118-i07.jpg
case_images: FIG7
case_images: In a second procedure, the tumor was entirely resected (Figure 7).