Home » Browse Health Topics » Lung Cancer » Size of lung lesion and risk of malignancy
Size of lung lesion and risk of malignancy
Dear Ask The Doctor: I've been experiencing chest tightness and shortness of breath for almost a month now. My doctor sent me to the ER, where they did blood work, EKG breathing treatment, chest x-ray, CT scan, and stress test. My lung specialist said my lungs are clear, and my breathing function test was good. The CT scan did show a small nodule (half a centimeter) on my left lung. I do have a history of lung cancer (I never smoked), and my upper right lobe was removed 7 years ago. Next, a cardiologist did a heart catheterization and said my heart and arteries were like an 18-yr-old's. My specific question: Is it possible for a half centimeter lung nodule to cause my symptoms? Thank you.
Answer:I think it is unlikely that a nodule half a centimetre in size would cause your symptoms of shortness of breath and chest tightness. It is reassuring to note that all the investigations you had completed were normal. Larger lung lesions are more likely to be cancerous than smaller lesions. In one study, the likelihood of malignancy was 0.2 percent for nodules smaller than 3 mm, 0.9 percent for nodules 4 to 7 mm, 18 percent for nodules 8 to 20 mm, and 50 percent for nodules larger than 20 mm. Therefore if your lesion is approximately 5 mm there is about a 1% chance of malignancy. Your family doctor could arrange follow-up screening with CT scan to monitor size of this lesion.
Have a Question? Ask The Doctor Here.
Sign In to join in the conversation.
Lung Transplant Survival
Can a person survive with only one lung? A friend of mine needs a lung transplant and I want to help him, if I can.
The Benefits of E-cigarettes
Hi! I'm working on a HOSA competition for Biomedical Debate, and this year, the topic is: Are e-cigarettes more harmf...
I am having trouble breathing.
I am having trouble breathing, i am a smoker and i am 24 years of age... im finding hard to get that last bit of brea...
Small cell lung cancer or mesothelioma?
If I drain fluid from around my husbands lungs everyday, is that small cell lung cancer or mesothelioma ?
I may have lung cancer please help
When I had a chest x-ray I had a lot of white in my lungs,What could be the cause?
Post pneumonia symptoms
43 year old male, treated for pneumonia 3 weeks ago with Levaquin. Most cough is gone, vital signs are good, oxygen s...
Husband with flu, mother on chemo
My husband developed the flu last Friday. His fever has broke and he is on the road to recovery. Mostly just a cough ...
White, grainy sputum when clearing throat or co...
Occasionally when I cough or clear my throat, the mucus or phlegm seems to have a grainy quality. I have noticed that...
What could be the cause to have blood in stool?
What does it mean when you have blood in urine/ stool?
Bleeding from rectum
What causes dark almost black blood coming out from rectum . bad part have to change pants an ect... doctors here sai...
You’re in good hands, meet ATD’s founding physicians.
Dr. Suneel Sharman M.D.
- Board Certified GP
- CMO ATD Health Network Inc.
- Adjunct Professor at U Of T
Dr. Kunaal Jindal M.D.
- Board Certified Plastic Surgeon
- Director ATD Health Network Inc.
- Fellowship Training Atlanta, GA