case_images: PMC11826100_01
case_images: CXR post shoulder reduction.. The arrow shows the rounded well-defined mass at the apical left hemithorax.. CXR: chest radiograph
case_images: cureus-0017-00000077453-i01.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i01.jpg
case_images: FIG1
case_images: An incidental finding of a left upper zone mass was noted on the post-reduction CXR (Figure 1).
case_images: Horner syndrome (ptosis and miosis) seen in left eye (arrow).
case_images: cureus-0017-00000077453-i02.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i02.jpg
case_images: FIG2
case_images: Horner syndrome (HS), characterized by ipsilateral anhidrosis of the face, axilla, and palm; miosis; and partial ptosis, which had been present for more than four years (Figure 2). He denies any respiratory or constitutional symptoms and was generally well.
case_images: Coronal view of contrast-enhanced computed tomography (CECT) of thorax.. The arrow shows the thoracic mass over the left upper region (coronal view).
case_images: cureus-0017-00000077453-i03.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i03.jpg
case_images: FIG3
case_images: Axial view of contrast enhanced computer tomography (CECT) of thorax.. The arrow shows the thoracic mass over the left upper region (cross-sectional view), the likely direction of the needle biopsy.
case_images: cureus-0017-00000077453-i04.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i04.jpg
case_images: FIG4
case_images: The tumor was adherent to the posterior first and second ribs and left subclavian artery (Figure 4).
case_images: Gross inspection of the resected mass.
case_images: cureus-0017-00000077453-i05.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i05.jpg
case_images: FIG5
case_images: A well-encapsulated left paraspinal tumor measuring 7.0 x 6.5 x 5.0 cm was excised completely (Figure 5).
case_images: Histopathology depicting spindle cells with elongated-to-plump vesicular nuclei with occasional visible nucleoli (arrow).
case_images: cureus-0017-00000077453-i06.jpg
case_images: PMC11826100_01_cureus-0017-00000077453-i06.jpg
case_images: FIG6
case_images: The spindle cells are arranged in short fascicles with nuclear palisading (Verocay bodies) in Antoni A areas (Figure 6).