A 28-year-old woman presents with complaints of intermittent lower abdominal pain and bloating. She denies any vaginal bleeding or discharge. On physical examination, a palpable, non-tender mass is noted in the right lower quadrant of the abdomen. Imaging Findings: Transvaginal ultrasound: Reveals a large, complex cystic mass involving the right ovary with multiple echogenic foci, suggesting solid components. CT scan: Confirms the findings with no evidence of metastatic disease. Laparoscopic surgery: Reveals a large cystic teratoma (dermoid cyst) involving the right ovary and fallopian tube. What is the most common tissue type found in a mature cystic teratoma (dermoid cyst)?
