Squamous cell carcinoma is the most common type of malignant transformation in mature cystic teratomas. It mainly effects postmenopausal women but is rarely seen in young patients. Carbohydrate antigen 19-9 (CA19-9) tumor marker is a high-molecular-weight glycoprotein, frequently elevated in gastrointestinal adenocarcinomas. CA19-9 levels can increase in… (More)
Signet cell carcinoma, which is a subtype of adenocarcinoma, usually originates from the stomach. However, it can also originate from the colon, rectum, gallbladder, pancreas, urinary bladder, and breast. We represent a 19-year-old boy diagnosed with signet cell tumour while he was being evaluated for an initial diagnosis of inflammatory bowel disease.