Journal of the Medical Association of Thailand Vol 84, No 6:JUNE 2001 0125-2208 84 6 2001 Jun A Cases of Thyrotropin-Secreting Pituitary Macroadenoma 897 EN Thongkum Sunthomthepvarakul Supunnee Ngowngarmratana Pravit Prachasichai Rungthip Dansirikul Arunluck Komindr Case Report