case_images: PMC6304189_01
case_images: Coronal T1-weighted fast spin-echo (T1FSE) MRI depicting the tumor as an enhancing mass at the cephalic part of the right sternocleidomastoid muscle.
case_images: CRIOT2018-6573587.001.jpg
case_images: PMC6304189_01_CRIOT2018-6573587.001.jpg
case_images: fig1
case_images: Past medical history included a resected desmoid tumor with free surgical margins from the same region six months ago in another center (Figure 1).
case_images: Axial T1-weighted fast spin-echo (T1FSE) MRI showing an enhancing mass indicative of local tumor recurrence following surgery.
case_images: CRIOT2018-6573587.002.jpg
case_images: PMC6304189_01_CRIOT2018-6573587.002.jpg
case_images: fig2
case_images: MRI revealed an enhancing mass at the cephalic third of the SCM, in close contact with the right IJV, with no signs of vessel infiltration (Figure 2).
case_images: Surgical excision of the desmoid tumor.
case_images: CRIOT2018-6573587.003.jpg
case_images: PMC6304189_01_CRIOT2018-6573587.003.jpg
case_images: fig3
case_images: The neoplasm was found to originate from the upper portion of the SCM, extending to the parapharyngeal space, and infiltrating the SAN (Figure 3).
case_images: End-to-end anastomosis of the stumps of the spinal accessory nerve after macroscopic complete resection of the desmoid tumor.
case_images: CRIOT2018-6573587.004.jpg
case_images: PMC6304189_01_CRIOT2018-6573587.004.jpg
case_images: fig4
case_images: However, remaining length of the nerve was satisfactory, and a microsurgical end-to-end anastomosis was performed (Figure 4).
case_images: Immunohistochemical staining of the biopsy specimen: (a) desmin; (b) smooth muscle actin; (c) vimentin; (d) beta-catenin.
case_images: CRIOT2018-6573587.005.jpg
case_images: PMC6304189_01_CRIOT2018-6573587.005.jpg
case_images: fig5
case_images: Immunohistochemically, neoplastic cells stained vimentin (Figure 5), smooth muscle actin (Figure 5), and desmin (Figure 5) and were negative for CD34. beta-Catenin nuclear staining was also present (Figure 5).