case_images: PMC8074827_01
case_images: Preoperative picture of scalp swelling
case_images: JIAPS-26-60-g001.jpg
case_images: PMC8074827_01_JIAPS-26-60-g001.jpg
case_images: F1
case_images: Examination revealed a very pale infant with a 15 cm x 15 cm nonilluminant cystic swelling over the parieto-occipital region of the scalp, more so on the left side [Figure 1].
case_images: Intraoperative picture of mass excision
case_images: JIAPS-26-60-g002.jpg
case_images: PMC8074827_01_JIAPS-26-60-g002.jpg
case_images: F2
case_images: Excision of the cyst in toto was done; about 10% of the tumor had solid consistency [Figure 2].
case_images: Distinctive cytoplasmic membrane staining pattern with CD99 (x600)
case_images: JIAPS-26-60-g003.jpg
case_images: PMC8074827_01_JIAPS-26-60-g003.jpg
case_images: F3
case_images: The biopsy was reported as PNET/extraskeletal Ewing's sarcoma (EES); tumor cells were positive for CD99 (focally), neuron-specific enolase (NSE), and vimentin [Figure 3].