Sacro – coccygeal teratoma tumour cells consists of Cells of
**Core Concept**
Sacro-coccygeal teratoma (SCT) is a type of congenital tumor that arises from the sacrum and coccyx. It is a teratoma, which means that it contains cells from multiple germ layers, including ectoderm, endoderm, and mesoderm.
**Why the Correct Answer is Right**
The cells in a sacro-coccygeal teratoma are derived from all three primary germ layers: ectoderm, endoderm, and mesoderm. This is characteristic of teratomas, which are tumors that contain cells from multiple germ layers. The presence of cells from all three germ layers is what makes sacro-coccygeal teratomas so unique and complex. These cells can differentiate into various tissues, such as hair, skin, muscle, and nerve tissue.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify all three primary germ layers. While ectoderm is a component of teratomas, it is not the only component.
**Option B:** This option is incorrect because endoderm is only one of the three primary germ layers. Teratomas contain cells from all three layers, not just endoderm.
**Option C:** This option is incorrect because mesoderm is only one of the three primary germ layers. Teratomas contain cells from all three layers, not just mesoderm.
**Clinical Pearl / High-Yield Fact**
Sacro-coccygeal teratomas are typically benign and can be treated with surgical resection. However, they can grow rapidly and cause symptoms such as pain, bleeding, and urinary retention. Early diagnosis and treatment are crucial to prevent complications and ensure a good outcome.
**Correct Answer: D. Cells of ectoderm, endoderm, and mesoderm.**