Diagnosis: Acanthosis nigricans
Description: Velvety-like thickening of the neck.
Morphology: Hyperpigmentation
Site: Neck nape
Sex: F
Age: 44
Type: Clinical
Submitted By: Nameer Al-Sudany
Differential DiagnosisHistory:
Typical appearance of acanthosis negricans on the neck of a middle-aged woman of one year duration. Recently stomach adenocarcinoma was detected on gastroscopic biopsy.