Fetal lung interstitial tumor is a rare type of cancer that develops in the lungs of a fetus before birth. It is a type of malignant mesenchymal tumor, which is a type of cancer that develops from connective tissue cells. Symptoms of fetal lung interstitial tumor include difficulty breathing, rapid breathing, and chest pain. Treatment typically involves surgery to remove the tumor, followed by chemotherapy and/or radiation therapy.

The symptoms of fetal lung interstitial tumor can vary depending on the size and location of the tumor. Common symptoms include:

-Respiratory distress
-Rapid breathing
-Cyanosis (bluish discoloration of the skin)
-Abnormal chest X-ray
-Abnormal ultrasound
-Abnormal fetal heart rate
-Abnormal fetal movements
-Abnormal fetal growth
-Abnormal amniotic fluid levels
-Abnormal fetal blood tests

The exact cause of fetal lung interstitial tumor is unknown. However, some potential risk factors may include genetic mutations, exposure to certain environmental toxins, and maternal smoking during pregnancy.

Treatment for fetal lung interstitial tumor depends on the type of tumor and the stage of the pregnancy. Treatment options may include:

1. Observation: If the tumor is small and not causing any symptoms, the doctor may recommend observation and regular ultrasounds to monitor the tumor.

2. Surgery: If the tumor is causing symptoms or is large, the doctor may recommend surgery to remove the tumor.

3. Chemotherapy: Chemotherapy may be used to shrink the tumor before or after surgery.

4. Radiation therapy: Radiation therapy may be used to shrink the tumor before or after surgery.

5. Targeted therapy: Targeted therapy is a newer type of treatment that uses drugs to target specific molecules in the tumor cells. This type of therapy may be used in combination with chemotherapy or radiation therapy.

1. Maternal exposure to radiation
2. Maternal exposure to certain chemicals
3. Maternal smoking
4. Maternal diabetes
5. Maternal obesity
6. Maternal age over 35
7. Maternal use of certain medications
8. Genetic predisposition
9. Family history of certain cancers

At this time, there is no known cure for fetal lung interstitial tumor. Treatment options are limited and may include supportive care, such as providing oxygen and monitoring the baby's condition. Medications may be used to help reduce the size of the tumor or to reduce the symptoms associated with the tumor.