J Med Cases

Journal of Medical Cases, ISSN 1923-4155 print, 1923-4163 online, Open Access

Article copyright, the authors; Journal compilation copyright, J Med Cases and Elmer Press Inc

Journal website https://www.journalmc.org

Case Report

Volume 11, Number 12, December 2020, pages 388-393

Local Lung Mass Masquerading a Very Aggressive Extraskeletal Ewing Sarcoma Presenting as Bilateral Paraparesis in a Young Adult

Figures

Figure 1. Computed tomography (CT) thorax showing left lung mass with a left to right mediastinal shift.

Figure 2. Magnetic resonance imaging (MRI) thoracic spine without contrast. Infiltration of the T2 vertebral body and pedicle by the known malignancy in the left lung and pleural space (arrow).

Figure 3. (a) Sheets of small round blue cell tumor without necrosis. (b) Small round blue cells.

Table

**Table 1.** Admission Labs
Laboratory	Result	Normal value
White blood cells	21.07 × 10³/µL	4 - 10 × 10³/µL
Hemoglobin	13.2 g/dL	11.2 - 15.7 g/dL
Platelets	418 × 10³/µL	163 - 369 × 10³/µL
Sodium	143 mEq/L	136 - 144 mEq/L
Potassium	4.0 mEq/L	3.5 - 5.1 mEq/L
Chloride	103 mEq/L	98 - 110 mEq/L
Bicarbonate	26 mEq/L	20 - 30 mEq/L
Blood urea nitrogen	12 mg/dL	7 - 23 mg/dL
Creatinine	0.84 mg/dL	0.57 - 1.11 mg/dL
Aspartate transaminase	19 U/L	5 - 42 U/L
Alanine transaminase	35 U/L	5 - 49 U/L
Alkaline phosphatase	73 U/L	35 - 141 U/L
Total bilirubin	0.3 mg/dL	0.1 - 1.2 mg/dL