case_images: PMC11106221_01
case_images: A 4-mm pale blue elevated but not pedunculated lesion was observed in the transverse colon. No epithelial change was observed.
case_images: DEO2-5-e390-g003.jpg
case_images: PMC11106221_01_DEO2-5-e390-g003.jpg
case_images: deo2390-fig-0001
case_images: A 4-mm pale blue elevated but not pedunculated lesion was observed in the transverse colon, an area where no polyps were observed previously (Figure 1).
case_images: Histological image stained with hematoxylin and eosin revealed the presence of unstructured hyalinized tissue with calcifications within the submucosal tumor, which was observed in approximately 60% of the lesion.
case_images: DEO2-5-e390-g002.jpg
case_images: PMC11106221_01_DEO2-5-e390-g002.jpg
case_images: deo2390-fig-0002
case_images: Histological images stained with hematoxylin and eosin revealed that the submucosal tumor (Figure 2) included thickened vascular walls (arrows) and adipose tissue (Figure 3). In this case, the presence of unstructured hyalinized tissue with calcifications was observed in approximately 60% of the lesion (Figure 2), making it difficult to definitively identify smooth muscle composed of epithelioid cells.
case_images: Thickened vascular walls (arrows) and adipose tissues observed in the lesion.
case_images: DEO2-5-e390-g001.jpg
case_images: PMC11106221_01_DEO2-5-e390-g001.jpg
case_images: deo2390-fig-0003
case_images: Histological images stained with hematoxylin and eosin revealed that the submucosal tumor (Figure 2) included thickened vascular walls (arrows) and adipose tissue (Figure 3).
case_images: Although fragmented due to significant degeneration, spindle-shaped smooth muscle actin-positive cells were observed within and surrounding the unstructured hyalinized tissue.
case_images: DEO2-5-e390-g004.jpg
case_images: PMC11106221_01_DEO2-5-e390-g004.jpg
case_images: deo2390-fig-0004
case_images: Although fragmented due to significant degeneration, spindle-shaped smooth muscle actin-positive cells were observed within and surrounding the unstructured hyalinized tissue (Figure 4).