Hiroki Morikawa, Takaaki Oba, Ayaka Kitazawa, Ryoko Iji, Nami Kiyosawa, Masatsugu Amitani, Tadafumi Shimizu, Toshiharu Kanai, Takeshi Uehara, Ken-Ichi Ito
BACKGROUND: CA19-9 is a tumor marker for gastrointestinal and biliary-pancreatic adenocarcinomas; however, its association with thyroid cancer is unknown. Here, we report a case of CA19-9 producing locally advanced papillary thyroid carcinoma (PTC). CASE PRESENTATION: A 66-year-old woman who was identified with a thyroid tumor after a close examination of an elevated serum CA19-9 level, which was detected at health screening, was referred to our hospital. Ultrasonography revealed a 34 × 31 mm hypoechoic lesion in the lower pole of the left thyroid lobe...
April 10, 2024: Surgical Case Reports