Fig. 1
From: Primary malignant melanoma, an atypical presentation in the cervical spine: a case report
a Noncontrasted coronal TIWI MRI showing a well defined hyperintense lesion in the thoracocervical region measuring 5.12 cm × 4.55 cm. b Noncontrasted coronal TIWI MRI showing measurement of the lesion. c Contrasted coronal TIWI MRI showing no contrast enhancement of the lesion. d Axial TIWI showing the same lesion with infiltration of the surrounding tissues and the disc with associated narrowing of the spinal canal. The trachea is displaced to the right. e Noncontrasted coronal TIWI showing an enlarged submandibular lymph node. f Contrasted coronal TIWI showing no contrast enhancement of the submandibular node. g Sagittal T2WI showing a well-defined hypointense lesion in the thoracocervical region (C5-T1). h A sagittal STIR image hypointense lesion in the thoracocervical region. i A picture showing the region of the mass preoperatively (arrow). The vocal cord is displaced to the right. j An intraoperative picture showing the site of the tumor and residual tumor (black). k Picture showing black tumor extracted during surgery. l Histology hematoxylin and eosin (H&E) stain × 100 M showing the tumor composed of spindle to polygonal cells having abundant intra- and extracellular pigment