Lumps can develop in breast tissue in people of all sexes and genders. If you notice a lump, whether you suspect it might be a cyst, a tumor, or something else, it is important to consult a doctor. While most breast lumps are not cancerous, some noncancerous lumps still need treatment, and only a medical professional can confirm whether a lump is cancerous or not.To understand the difference, we spoke with Dr. Sumol Ratna, Assistant Professor in the Department of Medicine at NIIMS Medical College & Hospital.Breast Cysts vs. TumorsThe most common types of breast lumps are cysts and tumors, and knowing the difference can help reduce worry. Dr. Ratna explains, “A breast cyst is a fluid-filled sac that forms within the breast tissue. These are usually non-cancerous and are most often seen in women between 30 and 50, especially after menopause.”Cysts may appear as a single lump or multiple lumps of varying sizes. Depending on the amount of fluid inside, a cyst may feel soft or firm. Hormonal changes during the menstrual cycle can sometimes make them feel larger or slightly tender. Most of the time, cysts do not cause pain, although mild discomfort may occur at the lump site. Diagnosis is usually done via ultrasound, and if a cyst is found, a fine needle aspiration can confirm it contains fluid. Once drained, the cyst typically shrinks or disappears.A breast tumor, on the other hand, is an abnormal growth of cells in the breast. Dr Ratna said, “Tumors may be benign or malignant. Benign tumors, such as fibroadenomas, are solid, well-defined, and do not spread to other parts of the body. Malignant tumors, however, are cancerous and can invade nearby tissues or organs.” Tumors are generally hard, irregularly shaped, and fixed in place. They may sometimes cause changes like skin dimpling or fluid from the nipple, but pain is usually not present.Types of Breast CystsSimple cysts: Completely filled with fluid, always noncancerous, with thin, smooth walls.Complex cysts: Have thick, irregular walls and may contain some solid mass or debris. Doctors may drain fluid to test for abnormalities and rule out cancer.Complicated cysts: Combine features of simple and complex cysts. They usually have thin, smooth walls but may contain small amounts of debris.How Doctors Tell the DifferenceDoctors use a range of tests to determine whether a tumor is benign or malignant. Cysts are generally smooth and movable, while tumors tend to be hard and fixed. Ultrasound is commonly used for diagnosing cysts, whereas tumors usually require mammograms and biopsies.While both cysts and tumors can appear as single lumps, their characteristics and implications are very different. Any noticeable change in the breast shape, or discharge from the nipple, should prompt a visit to a breast specialist. Early evaluation is key to peace of mind and proper treatment.
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