case_images: PMC5892980_01
case_images: Nonmobile 4 cm mass at the posterior aspect of the scapula.
case_images: CRIOR2018-7018109.001.jpg
case_images: PMC5892980_01_CRIOR2018-7018109.001.jpg
case_images: fig1
case_images: The physical examination revealed a nonmobile 3 cm T x 3 cm AP x 2 cm CC hard mass on the posterior superomedial angle of the right scapula, sensitive to palpation (Figure 1).
case_images: Thoracic CT scan axial view illustrating the solid mass measuring 2.6 cm T x 2.6 cm AP x 2.2 cm CC (orange arrow) at the superomedial aspect of the right scapula.
case_images: CRIOR2018-7018109.002.jpg
case_images: PMC5892980_01_CRIOR2018-7018109.002.jpg
case_images: fig2
case_images: T x 2.6 cm AP x 2.2 cm CC solid bone mass at the posterior aspect of the superomedial angle of the scapula. The diagnosis of an osteochondroma without signs of malignancy was stated (Figure 2).
case_images: Thoracic MR imaging of the osteochondroma. T1 axial view (a) illustrating the benign 9 mm smooth cap (green arrow). T2 coronal (b) and sagittal (c) views showing the osteochondroma measuring 2.6 cm T x 2.6 cm AP x 2.2 cm CC (orange arrows) located on the right scapula and compressing the accessory nerve (blue arrows).
case_images: CRIOR2018-7018109.003.jpg
case_images: PMC5892980_01_CRIOR2018-7018109.003.jpg
case_images: fig3
case_images: The accessory nerve (XI) was compressed between the osteochondroma and the deep layer of the trapezius; no muscle atrophy was described (Figure 3).
case_images: Surgical view of the osteochondroma. The lesion measured 3 cm T x 3 cm AP x 2 cm CC.
case_images: CRIOR2018-7018109.004.jpg
case_images: PMC5892980_01_CRIOR2018-7018109.004.jpg
case_images: fig4
case_images: T x 3 cm AP x 2 cm CC (Figure 4).
case_images: Histopathological section of the osteochondroma illustrating the bony trabeculae (blue arrow) and the cartilage component of the lesion (orange circle).
case_images: CRIOR2018-7018109.005.jpg
case_images: PMC5892980_01_CRIOR2018-7018109.005.jpg
case_images: fig5
case_images: The integrity of the accessory nerve was checked before closure. The histopathologic analysis confirmed the diagnosis of a benign osteochondroma (Figure 5).