PTEN Hamartoma Tumour Syndrome:Gastrointestinal Manifestations ofTwo Cases Diagnosed in Singapore

Chua CS¹, Loi CTT², Koh PK³, Cheah PY⁴, Lee HY⁵, Tang CL⁶, Ngeow J^7* and Chew MH^8*

¹Yong Loo Lin School of Medicine, National University of Singapore, Singapore

²Singapore Polyposis Registry, Department of Colorectal Surgery, Singapore General Hospital, Singapore

³Capstone Colorectal Surgery Centre; Fortis Surgical Hospital; Colorectal Surgical Oncology and Cancer Genetics Service (FSH); Institute of Bioengineering and Nanotechnology, A Star; Fortis-IBN Tissue Bank, Singapore

⁴Colorectal Cancer Research Laboratory, Department of Colorectal Surgery, Saw Swee Hock School of Public Health, National University of Singapore; Duke-NUS Graduate Medical School, National University of Singapore, Singapore

⁵Department of Dermatology, Singapore General Hospital, Singapore

⁶Department of Colorectal Surgery, Singapore General Hospital, Singapore

⁷Division of Medical Oncology, National Cancer Centre Singapore, Singapore

⁸Division of Colorectal Surgery, Singapore General Hospital, Singapore