PMC3754404_01
Figure 1: The child with prolapsing intussusception.
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F1
A clinical diagnosis of prolapsing colo-colic intussusception was made and the child was taken up for laparoscopic-assisted surgical correction (Fig. 1). 
Figure 2: Seromuscular tumour comprised of spindle shaped cells in sheets and fascicles with thinned out overlying mucosa (H/E x 40x).
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F2
Sections from the surrounding intestine showed moderate transmural inflammation by mixed inflammatory cells (Fig. 2, 3).
Figure 3: Cellular tumour comprised of monomorphic population of spindle cells with moderate amount of eosinophilic cytoplasm and elongated nuclei. No atypia or mitosis was identified (H/E x 400x).
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F3
Sections from the surrounding intestine showed moderate transmural inflammation by mixed inflammatory cells (Fig. 2, 3).
Figure 4: Tumour cells showing strong expression of vimentin.
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F4
On immunohistochemistry, the tumour cells were reactive for vimentin, CD117 (KIT) (Fig. 4); but, were negative for smooth muscle actin (SMA), Factor VIII antigen, neuron specific enolase (NSE) and synaptophysin.