An FNAC test is usually recommended when a lump has lasted more than two to three weeks, is growing, feels hard or fixed in place, or your doctor cannot explain it through examination alone. Most lumps turn out to be harmless; swollen lymph nodes from a recent infection are by far the most common cause, but the only way to know what a lump contains is to test a sample. If your doctor has advised a biopsy in Indore or an FNAC, here’s what that involves and why timing matters.
First, What Is FNAC?
FNAC stands for Fine Needle Aspiration Cytology. A very thin needle, usually thinner than the one used for a routine blood test, is inserted into the lump to draw out a small sample of cells. Those cells are then examined under a microscope by a pathologist.
It is the quickest and least invasive way to find out what a lump is made of. There are no stitches, no cuts, and most people are done within 15 to 20 minutes.
Why Do Lumps Appear in the Neck and Armpit?
Both areas are full of lymph nodes, small glands that are part of your immune system. When your body fights an infection, these nodes often swell, which is why a lump can appear during or just after a cold, a throat infection, a dental problem, or even a minor skin cut nearby.
Common causes include:
- Infection: viral or bacterial, often with a sore throat, fever, or a recent illness
- Thyroid nodules: common in the neck, often found by chance
- Cysts or lipomas: fluid-filled or fatty lumps, usually soft and harmless
- Blocked glands or ingrown hairs: especially in the armpit
- Tuberculosis: still a real cause of neck lymph node swelling in India
- Less commonly, lymphoma or a spread from another cancer
That last one is what most people are silently worried about. It is worth saying plainly that it is not the most likely explanation for a new lump, but it is exactly why doctors recommend testing rather than waiting and watching indefinitely.
When Should You Get a Lump Checked?
Not every lump needs testing. See a doctor if you notice any of these:
- The lump has not gone away after two to three weeks
- It is getting bigger
- It feels hard, rubbery, or fixed rather than moving freely under the skin
- It is painless, particularly if it is also firm
- It is larger than about 2 cm, roughly the size of a grape
- You also have unexplained weight loss, night sweats, or a persistent fever
- The lump appeared without any recent infection or illness
A painful lump that appeared suddenly alongside a sore throat or fever is usually infection-related and often settles on its own. A painless lump that grows quietly over weeks deserves a closer look sooner rather than later.
Noticed a lump that is not going away? A quick scan and FNAC can give you a clear answer instead of weeks of wondering.
What Happens Before the FNAC?
In most cases, an ultrasound comes first. A scan tells your doctor how deep the lump sits, how big it is, whether it is solid or fluid-filled, and whether nearby lymph nodes look normal. It also guides the needle accurately during the procedure itself, which is why many FNACs are done as ultrasound-guided procedures at a radiology centre in Indore rather than blind.
If your appointment includes a scan beforehand, our guide on how to prepare for an ultrasound scan covers what to wear and whether you need to fast.
What the FNAC Procedure Feels Like
Here is the honest version, since most anxiety about this comes from not knowing:
- You lie or sit down, and the area is cleaned
- Local anaesthetic is sometimes used, though for a superficial lump many people do not need it
- The thin needle goes in, and you feel pressure and a brief sting, similar to a blood test
- The needle may be repositioned once or twice to collect enough cells
- A small dressing goes on afterwards, and you can go home straight away
Mild soreness or a small bruise for a day or two is normal. You can eat, drive, and go back to work the same day.
FNAC vs Core Needle Biopsy vs Surgical Biopsy
These get confused often, so here is the difference in plain terms:
| Type | What It Takes | When It’s Used |
| FNAC | Loose cells through a very thin needle | First-line test for most accessible lumps |
| Core needle biopsy | A small tissue core through a slightly thicker needle | When FNAC is inconclusive or more tissue structure is needed |
| Surgical (excisional) biopsy | The whole lump or node is removed | When earlier tests are unclear or lymphoma is suspected |
FNAC is almost always the starting point because it is fast, low risk, and answers the question in the majority of cases. Your doctor moves to the next step only if the result is unclear or if the clinical picture calls for it.
Understanding Your FNAC Result
Results generally fall into one of four categories:
- Benign: no cancer cells found, the most common outcome
- Inconclusive or inadequate: not enough cells were collected, and a repeat test or core biopsy is usually advised
- Suspicious: some abnormal features, needing further testing to confirm
- Malignant: cancer cells identified, with your doctor guiding the next steps
An inadequate sample is not a bad sign in itself. It simply means the needle did not pick up enough material, which happens with small or deep lumps, and is one more reason ultrasound guidance helps.
Already have a report and want a second opinion? Our specialists can review existing scans and pathology reports.
Where to Get an FNAC Done in Indore
If you have been searching for a diagnostic centre near me in Indore after a doctor advised testing, what matters is finding a place that can do the scan and the FNAC in one visit rather than sending you between two locations. Apoorva Diagnostic Centre has been running imaging and pathology in the city for over 35 years, and our FNAC and guided biopsy services cover lumps, thyroid nodules, lymph nodes, and soft tissue masses across both our Vijay Nagar and Sapna Sangeeta branches.
As a full diagnostic centre that Indore patients use for both imaging and lab work, we can handle the ultrasound, the aspiration, and the pathology reporting without you needing to arrange three separate appointments.
Frequently Asked Questions
1. Is an FNAC test painful?
Most people describe it as a brief sting and some pressure, similar to a blood test. Local anaesthetic is available, though for superficial lumps many patients do not need it. Mild soreness for a day or two afterwards is normal.
2. How long does an FNAC take?
The procedure itself usually takes 15 to 20 minutes, including preparation. You can go home immediately afterwards and return to normal activity the same day.
3. Does a lump in the neck or armpit mean cancer?
No. Most lumps in these areas are swollen lymph nodes responding to an infection, or benign cysts and thyroid nodules. Testing is recommended not because cancer is likely, but because it is the only reliable way to rule it out.
4. Do I need an ultrasound before an FNAC?
Often, yes. A scan shows the size, depth, and nature of the lump, and guides the needle accurately during the procedure. Your doctor will advise whether guidance is needed in your case.
5. What if my FNAC result comes back inconclusive?
This usually means not enough cells were collected, which is common with small or deep lumps. Your doctor will typically advise a repeat FNAC or a core needle biopsy to get a clearer answer.
6. Can I eat before an FNAC test?
For most superficial FNACs, no fasting is required. If sedation or a deeper guided procedure is planned, your doctor will give you specific instructions beforehand.
The Bottom Line
A new lump in the neck or armpit is worth getting checked, especially if it has lasted beyond two to three weeks, is growing, or feels hard and painless. FNAC is a quick, low risk test that usually gives a clear answer in a single short appointment, and in most cases that answer is reassuring.
Waiting and hoping it goes away is the one approach that does not help. Testing early either puts your mind at rest or gets treatment started while it is most effective.
Has your doctor advised an FNAC or biopsy? Call 0731 495 2233 to book at Apoorva Diagnostic Centre, or book your appointment online.