Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain and co-relating with the CT Scan and subjective symptoms it seems that you are suffering from a severe form of
sinus infection or sinusitis and the symptoms of thick drainage at the back of throat or
post nasal drip along with blocked nose is indicative of thick mucous accumulation in the sinuses due to infection and as the sinuses drains through nose, there is blocked or congested feeling of the sinuses..
If no medication works you will have to consult an ENT SURGEON and get evaluated and a proper course of medications that will include antibiotics, anti inflammatory medications,, decongestants like Pseudoephadrine, do saline
nasal irrigation, steam inhalation and use a humidifier in your room..
You can also be advised decongestant nasal sprays containing
Xylometazoline or
Oxymetazoline..
Do warm compresses around nostrils..
If there is no improvement then Endoscopic Sinus Surgery has to be done to drain of the sinuses and relieve the symptoms..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.