| Melanoma is a malignant tumor of the | | | | tumours of the same cell. Spindle cell melanomas |
| melanocytes. These are the cells present in the | | | | have cells, lesions of which are large and epithelioid |
| skin and the eyes. They are responsible for the | | | | or rounded. Epithelioid and spindle cell nodular |
| skin color of a person. Melanoma is considered the | | | | melanoma have certain features of the lesion. It is |
| most lethal form of skin cancer. An early | | | | a prominent, ulcerated expansive nodule, involving |
| detection gives the patients a better chance for | | | | papillary and reticular dermis. It contains elastotic |
| survival. Melanoma is a principal metastasizing | | | | material and shows epidermal collarette. |
| tumor and is described as a primary tumor. One | | | | The lesions are observed on the head and neck |
| of the forms of melanoma is neurotropic | | | | region of the patient. They are present as bulky |
| melanoma. It is characterized by spindle shaped | | | | firm fibrous masses of tumor, usually amelanotic |
| cells showing patterns of neuroma. | | | | lesions. Their microscopic observations show poor, |
| In neurotropic melanoma, there is an abrasion that | | | | demarcated, infiltrating intradermal tumors, often |
| produces a cutaneous fibrous tumor. Neurotropic | | | | with sparse cellularity. The tumor consists of |
| melanoma results in a perineural invasion and | | | | elongated spindle-shaped or fibroblast cells, |
| expansion along peripheral nerves. Its microscopic | | | | surrounded by mature collagen bundles. Spindle cell |
| picture is characterized by patterns of schwann | | | | melanomas are common. The cells of such lesions |
| and spindle cells. They appear as poorly defined | | | | are large, epithelioid or rounded. The tumor |
| margins. It is difficult to diagnose this pattern as it | | | | displays fascicular or storiform growth pattern. |
| can be confused with the sarcomatous lesions. | | | | Sometimes spindle cell patterns in the dermal |
| Desmoplastic melanomas, spindle cell melanomas | | | | component of a melanoma are commonly |
| and neurotropic melanomas are all malignant | | | | mistaken for the patterns of a spitz. |