What is an "acral lentiginous melanoma"?

What is an "acral lentiginous melanoma"?

There are numerous different types of malignant melanomas that we can define, based on where they are located, their nature as they present to the doctor, and also on features under the microscope. One type of this malignant melanoma is a type of melanoma called a acral lentiginous malignant melanoma. These are the most rare form of malignant melanoma. It is found under the fingernails and toenails, on the bottom of the feet and on the palms. It is the most common type of melanoma that presents in people of pigment (blacks and Asians), however it is rare in the Caucasian population. Acral lentiginous melanoma is often very difficult to diagnose, as they are neglected areas of exams sometimes, and tend to present at somewhat later stage. Due to this acral lentiginous melanoma have on presentation a greater chance of metastasis. They are identifiable, however, and can be seen and biopsied, and found earlier so that their risk to the patient is minimal.