Germ Cell Tumors: Q&A
1. What are the early symptoms of germ cell tumors?
Symptoms of germ cell tumors vary by location.Pineal region tumors cause headaches, vomiting, and difficulty looking upward.Sellar region tumors manifest as polydipsia, polyuria, vision loss, and developmental delay.
2. How is germ cell tumor diagnosed?
Diagnosis relies on head MRI to show tumor location and extent; testing for tumor markers AFP and β-HCG aids in differentiating the tumor type.Cerebrospinal fluid analysis is performed to detect tumor cells.
3. What are the surgical treatment modalities for germ cell tumors?
Surgery is primarily used to obtain tissue for a definitive diagnosis and to relieve hydrocephalus.Stereotactic biopsy is a common diagnostic method, while ventriculoperitoneal shunting is used to alleviate hydrocephalus.
4. What is minimally invasive treatment for germ cell tumors?
Stereotactic biopsy obtains tumor tissue through a small incision for definitive diagnosis, offering minimal trauma and rapid recovery.Neuroendoscopic third ventriculostomy can resolve hydrocephalus.
5. Why are germ cell tumors sensitive to radiotherapy?
Pure germ cell tumors are highly radiosensitive, ranking among the most radiation-sensitive types of intracranial tumors.Fractionated radiotherapy can lead to long-term survival.
6. What are the chemotherapy regimens for germ cell tumors?
Chemotherapy is effective against germ cell tumors, with platinum-based regimens commonly used.Combinations of carboplatin or cisplatin with etoposide are frequently employed.Chemotherapy can shrink the tumor, facilitating subsequent radiotherapy.
7. How is follow-up conducted after germ cell tumor treatment?
Long-term, regular follow-up is required after treatment.Schedule regular MRI scans to monitor for recurrence and dissemination.Monitor changes in tumor markers such as AFP and β-HCG.Pay attention to endocrine function.
