Lumps in any part of the body can be a cause for concern, but they are more so when they are in an unusual location, like your shoulder. They can cause both physical discomfort and concern.
Needless to say, the cause of the lump should be investigated, and the accompanying symptoms should be recognised to explore the available treatments, which can provide peace of mind and clarity. One way to diagnose a lump in your shoulder is through shoulder ultrasound scans.
Types of Shoulder Lumps
Several conditions can result in lumps in the shoulder. Depending on the cause, the lump can have distinctive characteristics. Understanding these characteristics can help you identify the specific condition and the nature of the lump, hence the right treatment and prognosis for the lump.
Abscess
Skin abscesses are among the main causes of shoulder lumps. These pus-filled lumps sit deep under the skin. They are usually caused by bacterial infections and appear as round, firm, and, at times, painful lumps.
The abscesses can also exhibit redness, be warm to the touch, and drain pus. They can also be accompanied by chills and fever.
Arthritis
Some shoulder lumps can be related to joint inflammation, commonly arthritis. The type of arthritis, commonly rheumatoid arthritis, can cause rheumatoid nodules. These are hard, flesh-coloured, dough-like lumps that usually appear on bony areas like the shoulders.
Osteoarthritis can also lead to bone spurs called osteophytes around the affected joints. Osteophytes commonly occur around the shoulders, neck, knees, fingers, and feet. They may not always come with symptoms but can result in limited joint motion and pain if they occur on nerves or tissue.
Cancer
Rarely is a shoulder lump possibly a soft tissue sarcoma, but it is not out of the question. A sarcoma is a type of cancer that forms tumours in connective tissues like nerves, muscles, and tendons. Soft tissue sarcomas are painless but can cause pain and restricted movement as they progress.
Shoulder lumps can also result from squamous cell carcinoma, a type of skin cancer that causes scaly, rough patches that resemble warts.
Cyst
Shoulder lumps can also result from cysts. These are closed sacs of tissue containing pus, air, or fluid. Different types of cysts can develop on the shoulder and around the shoulder area, such as para-labral cysts, bone cysts, epidermoid cysts, and ganglion cysts.
Paralabral cysts can sometimes cause pain and discomfort when the joint fluid-filled cysts press against the nerves or tear the surrounding cartilage, but epidermoid cysts are painless, coloured sacs filled with keratin.
Lipoma
Lipomas are benign fatty tissue lumps that appear on the shoulder, neck, and armpits. They feel rubbery, soft, and doughy when touched. They are usually painless but can cause discomfort when they press on blood vessels or nerves.
Injury
Shoulder lumps can also be as a result of an injury. Fractures, muscle contusions and separations can all cause the shoulder to have a lump.
Fractures occur when the shoulder bone breaks, resulting in pain and swelling. A lump may appear in the area where the bone broke.
Additionally, separated shoulders occur when the ligaments connecting the collarbone and shoulder blade disconnect, causing a lump on the shoulder.
Muscle contusions are injuries to the muscle fibres. They can cause swelling, discolouration and the formation of a lump called a hematoma.
Knots
Muscle knots or myofascial trigger points occur on various body parts, including the shoulder and neck area. They are best described as tense muscle fibres resulting from muscle tissue contracting even when at rest.
Muscle knots can present various symptoms, including swelling, pain, and sensitivity. They can be caused by a lack of activity or too much use of a certain muscle group. Exercise and massages can alleviate muscle knots.
Pimples or Warts
Shoulder lumps can also be caused by large warts or pimples. Pimples are pores full of dead skin cells and oils. Most pimples are not painful, but larger ones, like cystic acne and nodules, can be.
Warts, on the other hand, are caused by the human papillomavirus (HPV) infection. They can occasionally appear on the shoulders but most commonly on the hands. They can be small or large, smooth or bumpy, and variously coloured.
Diagnosing Shoulder Lumps
There are various types of shoulder lumps, and identifying the type and cause of the lump is crucial in treating and prognosis. Doctors can use various methods to diagnose the lump, ranging from physical examination to advanced imaging techniques such as private ultrasound. Each tool has a crucial role in uncovering the underlying cause of the lump and informing the right treatment decisions.
Physical Exam
The first step in diagnosing a shoulder lump is a physical exam. The doctor can examine the lump by touching it and looking at it for symptoms such as redness and swelling. This evaluation helps determine the appropriate diagnostic approach.
MRI Scan
If the physical exam doesn’t provide information about the lump and how to proceed with treatment, the doctor may request an MRI scan as an additional diagnostic tool. An MRI scan uses radio waves to capture detailed images of soft tissues and provides valuable information for diagnosing shoulder lumps.
X-Ray
If a lump is suspected on the bone, an X-ray may be necessary to obtain a clear image of the affected area. The imaging will also assess bone-related abnormalities and help doctors identify the best treatment method.
CT Scan
A CT scan is relatively similar to an X-ray. Still, the images are taken from different angles and used to create cross-sectional images that could aid in diagnosing shoulder lumps.
Biopsy
If the doctor suspects the lump could be a tumour or a lipoma, they may recommend a biopsy to investigate whether it is cancerous. This procedure involves taking a sample of tissue from the lump and examining it in a laboratory to determine its nature.
Ultrasound
A shoulder ultrasound is also crucial in diagnosing and identifying shoulder lumps. Ultrasounds are quick, painless, and noninvasive medical imaging technology that uses sound waves to capture pictures of the inside workings of the shoulder.
They allow for visualisation of the shoulder joint, assessment of pain, and range of movement. The ultrasound can also be used to evaluate the shoulder’s tendons, ligaments, and muscles. Specialists can also identify signs of inflammation and fluid, assess abnormalities, and flag any concerns.
The best thing about shoulder ultrasound scans is that they provide real-time imaging, enabling doctors to make more accurate diagnoses based on the images produced.
What to Expect During a Shoulder Ultrasound
An ultrasound lasts 15 to 30 minutes. Once you visit the ultrasound clinic, the specialist will apply a clear, water-based gel to the affected shoulder to ease the movement of the ultrasound probe over the skin without causing discomfort.
The probe emits sound waves and captures images of the shoulder region’s muscle joints and soft tissues. These images help the doctor identify the underlying cause of the shoulder lump and provide an accurate diagnosis.
No specific aftercare is required after the ultrasound. However, depending on the findings, follow-up treatment may be required.
When to Seek Medical Assistance
Shoulder lumps that persist for more than two weeks grow in size, do not move, or cause pain and discomfort should be evaluated by a doctor.
If the shoulder lump results from a recent injury or signs of a severe condition, seeking medical attention quickly is crucial.
Conclusion
Shoulder lumps are present in various sizes, discomfort levels, and textures. Most are harmless and may require no attention to go away on their own. However, only a medical practitioner should determine whether the lump should be left alone or requires additional medical attention.
Ultrasound scans have proven key in helping with the diagnosis of lumps, providing valuable insight into the underlying cause of the lump, and determining the best course of action. An ultrasound can be a significant first step in assessing a shoulder lump.
