Types of basal cell carcinoma (BCC). (A) Nodular BCC in preauricular area. (B) Superficial scalp BCC, which can be mistaken for a patch of eczema, psoriasis, or ringworm (fungus, tinea faciei). (C) Scar-like morphoeic BCC, which can have extensive subclinical spread. (D) Pigmented BCC mimicking malignant melanoma |
Histology of nodular basal cell carcinoma (BCC) showing circumscribed “golf ball” shaped area of cancer cells (arrows). (B) Superficial BCC showing a spreading and budding pattern of cancer cells limited to superficial skin (arrows). (C) Infiltrative BCC, with extensive lateral and deeper involvement, a “tree trunk with roots” pattern of infiltrating islands and cords of cancer cells. (D) Pigmented BCC showing clumps of pigment (arrows) |