Doctors in Mumbai Detect Two Rare Cancers Within Single Ovarian Tumour
Doctors at the state-run GT Hospital-CAMA and Albless Hospital in Mumbai have identified an exceptionally rare medical condition after detecting two distinct cancers within a single 27-cm ovarian tumour in a 55-year-old woman.
The case, which involved papillary thyroid carcinoma arising from a mature ovarian teratoma alongside ovarian clear cell carcinoma, represents the first reported occurrence of both malignancies coexisting in a single ovarian tumour. The findings were documented and published in the International Journal of Clinical Obstetrics and Gynaecology by Dr Tushar Palve, Associate Professor of Obstetrics and Gynaecology, along with pathology faculty members Dr Ashwini Natekar, Dr Radhika K., and Dr Ashwini G.
The 55-year-old postmenopausal patient sought medical care after experiencing abdominal pain and a palpable lump for approximately two months. Medical investigations detected a large solid-cystic tumour near her right ovary. Notably, her levels of CA-125, a common blood marker used to evaluate ovarian cancer and monitor treatment progress, remained within the normal range.
Surgical intervention was performed to remove the patient's uterus, both ovaries, and fallopian tubes. Upon excision, the tumour measured approximately 27 by 25 by 17 centimetres. A detailed histopathological analysis subsequently revealed the presence of papillary thyroid carcinoma within a mature cystic ovarian teratoma, combined with ovarian clear cell carcinoma.
A teratoma is a form of ovarian germ-cell tumour capable of containing various mature tissues such as skin, hair, and fat. Dr Palve noted that while mature cystic teratomas are common germ-cell tumours, malignant transformation within them occurs in only 1 to 3 percent of cases. Squamous cell carcinoma is the most frequently observed malignancy in such cases, making thyroid cancer developing inside a teratoma an extremely unusual event.
Medical teams noted that the simultaneous presence of two separate malignancies—papillary thyroid carcinoma and clear cell carcinoma—made the case particularly unique.
Further clinical evaluation and CT imaging confirmed that the malignancies were confined strictly to the ovary, with no spread detected in the surrounding lymph nodes. Following the surgical procedure and subsequent medical treatment, the patient remained stable and was discharged from the hospital.
The medical team stated that this case underlines the critical need for comprehensive pathological examinations of ovarian tumours, especially among postmenopausal women, as the true nature of rare and complex tumours often becomes evident only after complete surgical extraction and microscopic analysis.
