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Differential diagnoses of malignant melanoma

A series of conditions may resemble malignant melanoma:

  • Nevus
  • Verrucae seborrhoicae with secondary inflammation reaction
  • Pyogenic granulomas
  • Pigmented basal cell carcinoma
  • Hemorrages in regular verruca 
  • Vascular changes
  • Pigmented fibromas
  • Addison's disease
  • Blue nevus
  • Kaposis sarcoma
  • Oral nevus
  • Amalgam tatooing
  • Grafitti tatooing
  • Melanotic macule
  • Peutz-Jeghers syndrome
  • Physiological pigmenting 
  • Ecchymosis
  • Petechiae

Examples of differential diagnoses

Angioma. Click to enlarge. Blue nevus. Click to enlarge. Seborrheic keratosis. Click to enlarge.

Pigmented basalioma. Click to enlarge. Pigmented basalioma. Click to enlarge.

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