2/28/2024 0 Comments Lame dog developed swollen buttRemoval of any abnormal lumps from your pet’s skin, muscle or connective tissue layer is often referred to as a lumpectomy. Lumpectomies and Surgical excision (removal) In most cases, however, the results will be reported back to us within a week or two (depending on the type of sample). Typically histopathology samples have a slightly longer turnaround in the lab than cytology samples. The downside to a biopsy is that it usually requires general anaesthesia to retrieve the samples. It is a particularly useful technique for certain type of growths which either may not shed cells very easily or when it is important that we know what grade (severity) that the growth is, as this may affect how aggressively we have to treat your pet. This may provide more accurate information as to how malignant or benign a mass is. A surgical biopsy allows examination of a section of tissue and the arrangement of the cells within the tissue (histopathology), as opposed to the FNA which provides cells that have been sucked out and are no longer in their normal arrangement. Surgical biopsyĪ surgical biopsy may give a more accurate answer than a FNA. Some samples may be examined by your vet within the surgery. When do you get the results?Ĭytology samples are usually reported to your vet within a day or two if sent to an external laboratory. If the needle passes into the surrounding tissue rather than the core of the lump this may provide misleading information. In some cases, a lump may have a surrounding fatty tissue. How accurate the answer also depends on where the needle passes into within the lump. In a lot of cases, FNA can provide useful information about a growth which will then inform your vet’s next steps, i.e does it need removing, and how big a margin around the lump do they need? The disadvantage is that in a small proportion of cases, the sample may provide no useful information some lumps may not shed cells very easily and may not provide a representative sample. It may not be appropriate in some cases, particularly if a growth is very close to a sensitive area or if your pet is in pain around the area, and it may also depend on your pet’s temperament. Often this procedure is done while your pet is with you in the consulting room and it’s usually not painful, meaning it is uncommon for the animal to need sedation or anaesthetic for your vet to carry this out. The advantage of FNA is that it allows investigation of a lump without having to resort to anaesthesia and more invasive techniques. These are then transferred onto a microscope slide to allow examination under the microscope (cytology). Options for further investigation may include: Fine Needle Aspirate (FNA)įine needle aspirate involves inserting a needle into the growth to remove some of the cells. If it appears that a lump genuinely appears to be a growth, the next consideration will be to decide on an approach. There are many types of lumps and growths and while some may be unpleasant for dogs and cats, many are not. Lumps are a very common occurrence on pets and is a good reason for us to examine our pets regularly. In veterinary, however, we do generally tend to use the word to describe a growth – this could be equally applied to a benign growth (or lump) as much as a malignant (cancerous) growth, therefore if we describe a growth as a tumour, this does not necessarily mean that it is cancerous. The word originates from the Latin ‘tumor’ which means ‘swelling’ and therefore technically it could be used for any swelling on the body. The word ‘tumour’ is a very emotive word and is associated and used often when diagnosing lumps in pets. Generally, it is impossible to give a 100% accurate answer as to what a growth is just by examining it, although it may be possible to suggest what it is likely to be, and therefore, depending on the appearance of the lump, your vet may advise on further testing. An examination will usually be able to determine if this is the case and then appropriate treatment can be provided. Sometimes the cause of the swelling may be an abscess, cyst, seroma (fluid-filled swelling sometimes seen after a knock or after surgery), an area of inflammation or callus (thickened skin due to rubbing) etc. Lumps and growths on dogs come in all shapes, sizes and locations and are common in dogs and cats. What do lumps on dogs mean? What is a lump and what causes them?
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