This post is an answer to the Case – Pigmented Macule on the Foot
On physical examination, an irregular pigmented macule with a superficial ulceration and brown haemorrhagic crusts was observed on the left plantar near the heel.
A skin biopsy showed a malignant melanoma and immunohistochemical examination of biopsied tissue sections showed positive staining for melanoma associated antigens using the antibodies HMB-45, Melan-A, and S100. The patient was diagnosed with an acral lentiginous melanoma (ALM).
She underwent a wide local excision with a sufficiently large margin from the lesion’s border. A sentinel lymph node biopsy of the inguinal nodes was negative. Fortunately, there was no evidence of recurrence during 5 years of follow-up.
SIMILAR CASE: 2-year history of a nonhealing ulceration on the left heel