Diagnosis: Melanoma
Description: Melanoma in situ with nests of atypical melanocytes on the sides and tips of the rete ridges
Clinical Features: Macule brown
Pathology/Site Features: Melanoma nests
Sex: M
Age: 65
Submitted By: Ian McColl
Differential DiagnosisHistory:
Pigmented lesion on the abdominal wall noted on a skin examination Dermatoscopy showed a slightly thickened network but could have been a nevus Shave biopsy excision
Description: Atypical melanocytes in nests at the DEJ
Comments: Melanoma in situ with nests of atypical melanocytes on the sides and tips of the rete ridges