Histopathology:
Macroscopic: FNAC is done for the soft tissue mass and 11 slides are smeared, fixed in 95% alcohol, and stained by H&E stain.
Microscopic: Adequate smears show numerously scattered discohesive blue round cells with large hyperchromatic nuclei. The cytoplasm is scanty. All are in a background of RBCs, and Inflammatory cells.
Diagnosis: left postero-lateral chest soft tissue mass, FNAC shows a picture of small round blue cell tumor.