Subcutaneous Lumps: Are They Tumors or Something Else? - Oncology

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When it comes to subcutaneous lumps, it's important to understand that not all lumps or bumps under the skin are tumors. The term "tumor" can refer to any abnormal growth of tissue, which can be benign (non-cancerous) or malignant (cancerous). In your case, the small, movable, hard lumps you are feeling could be a variety of things, including benign tumors, cysts, or even lipomas.

1. Benign Tumors: These are non-cancerous growths that do not spread to other parts of the body. Common types of benign tumors that can appear as lumps under the skin include:
- Fibromas: These are benign tumors made up of fibrous or connective tissue. They can feel firm and may be movable under the skin.

- Lipomas: These are soft, fatty lumps that are usually painless and can be easily moved around under the skin. They are the most common type of soft tissue tumor in adults.

- Sebaceous Cysts: These are small lumps that can occur when sebaceous glands become blocked. They are usually filled with a thick, oily substance and can be movable.

2. Malignant Tumors: These are cancerous growths that can invade surrounding tissues and spread to other parts of the body. While it is less common for lumps under the skin to be malignant, it is still a possibility, especially if there are changes in size, shape, or if they are associated with other symptoms (such as pain, redness, or changes in skin texture).

3. Other Conditions: Not all lumps are tumors. Some may be:
- Infections: Abscesses or infected cysts can present as lumps under the skin.

- Inflammatory Conditions: Conditions like rheumatoid arthritis can cause lumps due to inflammation.

- Lymph Nodes: Swollen lymph nodes can also feel like lumps under the skin, especially if there is an infection or other underlying condition.

Given your history of having a benign tumor removed from your breast, it is understandable to be concerned about the new lumps. However, the characteristics you describe—small, movable, and hard—are often associated with benign conditions.
It is crucial to consult with a healthcare professional for a proper evaluation. They may recommend imaging studies, such as an ultrasound, or even a biopsy if there is any concern about the nature of the lumps. A biopsy can provide definitive information about whether the lumps are benign or malignant.

In summary, while the lumps you are feeling could potentially be benign tumors like fibromas or lipomas, it is essential to have them evaluated by a healthcare provider. They can provide a thorough examination and determine if any further investigation or treatment is necessary. Regular monitoring and follow-up are key, especially if there are any changes in the lumps over time.