I have a genetic disorder and spent thousands of hours reading about mine and other disorders and I am not sure I agree that a large mass on the neck is genetic or chromosomal as this is impossible to state without a fetal MRI. If a genetic disorder (and a chromosomal disorder usually involves a thousand genes) is severe enough to cause a large mass, it would also show other skeletal and soft tissue abnormalities.
It is quite uncommon to have large masses, and they are usually a type of cyst. Even if the doctor says the word tumour , do not panic, as tumour only means abnormal growth. My condition gives me skin tumours, but they are all benign, not malignant, not cancer as my nerve cells have a defect on the "off" switch so keep growing even when they shouldn't.
The next steps for you will likely be a high definition 4D scan and a fetal MRI to check the blood flow of this mass. You will be booked for a c-section and your baby will probably have another MRI straight away, and from there, there will be a diagnosis and a plan.
It can be something totally benign so keep this in mind in these dark days. It is most likely something benign which will be solved with a surgery to excise the mass.
Use these days, to get ready.
- Finish to prepare the baby's space at home,
- prepare your hospital bag and put it in the boot of the car when you go to do the next tests.
- have emergency childcare plan ready so you don't have to worry about your toddler during the tests and in case you have to stay under hospital surveillance until the delivery
- fill the freezer with food and meals
- organise if you can a cleaner to be on call to take care of the house if needed
It is very likely, you won't need any of these steps but keeping busy is far better for the mind than thinking about a drink.
This is a very distressing time, but you will know more soon.