ACKNOWLEGEMENTS
The authors like to thank Dr. Yen-Lin Chen, Department of Radiology, for providing the medical images and explanations of the present case.
We also like to thank to Dr. Wan-Chen Tsai, Department of Surgery, for explaining the intra-operative findings.
The authors are also grateful to Mei-Ling Li, medical laboratory technician, for assisting in pathological sectioning and processing IHC and histochemical staining.