Superficial BCC Features


  • Lobule like protrusion of basal cells confined to a nest structure originating from the Stratum Basale/ DEJ
  • Peripheral boundary in superficial types is always more prominent on dermis facing side of nest


  • DEJ alteration is always prominent in superficial nests
  • Dermis protruding growth of the basal layer disrupts the expected undulating pattern of the DEJ
  • DEJ often appears darker in areas where nests present


  • Associated with, if not directly connected with the epidermis
  • Peripheral boundary often less obvious except on dermis facing side


  • Typically the boundaries of epidermally bound basal cells nests appear more diffuse then their nodular counterparts
  • Epidermal thinning can occur above the nest site as a result of ulceration


  • Nests can sometimes be easily identified by a distinct lower cleft region appearing like a horseshoe, underlining the nest


  • Larger more established nests often have areas of areflectivity at their core
  • This areflective core is due to tissue fluid from the central necrosis that occurs in some basal nests

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