Melanonychia, a black line on your nail, can be a sign of melanoma or benign pigmentation changes. Injuries, medications, and conditions like hyperthyroidism may also cause dark lines on your nails. Malignant melanoma is a type of skin cancer that originates in melanocytes.

Context Explanation

Although these pigment-producing cells are found primarily in the basal layer of the skin, they are also located in the GI ... MSN: Black Line on Your Nail: Causes and When To Seek Care Evaluation of surgical modalities for stage 0 to stage II acral lentiginous melanoma: A National Cancer Database study. This is an ASCO Meeting Abstract from the 2025 ASCO Annual Meeting I. This ...

Insight Material

The meaning of MALIGNANT is tending to produce death or deterioration; especially : tending to infiltrate, metastasize, and terminate fatally. How to use malignant in a sentence. MALIGNANT definition: disposed to cause harm, suffering, or distress deliberately; feeling or showing ill will or hatred. See examples of malignant used in a sentence. While benign tumors are noncancerous and generally grow slowly without invading nearby tissues, malignant tumors are cancerous, capable of rapid growth, and can invade surrounding areas, requiring immediate medical attention.

Final Conclusion

A malignant neoplasm is a cancerous tumor. It develops when abnormal cells grow and multiply. These tumors may spread to other parts of your body.