Authored by: N.N.
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- White and/or yellow clodsThis glossary term has not yet been described.: Seborrheic keratosisThis glossary term has not yet been described., dilated infundibula and inclusion cysts ("milia") filled with keratin, sebaceous gland hyperplasia. Radial vesselscrown vessels Radial serpentine or arborizing vessels at the periphery of the lesion that radiate towards the center but do not cross the midline od the lesion. sebaceous hyperplasia which do not cross the center of the lesion are a strong clue to sebaceous gland hyperplasia.
- Orange clods: Seborrheic keratosis, or basal cell carcinomais the most common skin cancer, and one of the most common cancers in the United States. While BCC has a very low metastatic risk, this tumor can cause significant disfigurement by invading surrounding tissues (orange clods due to ulceration (serum crust)). Whereas multiple orange clods are seen in seborrheic keratosisThis glossary term has not yet been described., in basal cell carcinoma one usually finds one or two orange clods with traces of red due to red blood cells in the serum crust. A further clue is the pattern of vesselsThis glossary term has not yet been described.: in basal cell carcinoma serpentine vesselslinear irregular vessels with multiple bends. Seen with flat BCC and melanoma, often branched; in seborrheic keratosis, looped or coiled vesselsglomerular vessels tightly coiled vessels resembling the glomerular apparatus of the kidney Bowen disease (or rarely serpentine).
- Red or purple clods: hemangiomaThis glossary term has not yet been described. or vascular malformations.
- Black clods: Thrombosed vessels
- Red clods: Hemorrhage
- Large, polygonal skinThis glossary term has not yet been described.-colored clods:exophytic congenital neviis a type of melanocytic nevus (or mole) found in infants at birth. This type of birthmark occurs in an estimated 1% of infants worldwide; it is located in the area of the head and neck 15% of the time. with papillomatous surface (Unna nevus or Miescher nevusThis glossary term has not yet been described.), or verrucous seborrheic keratosis.
- Brown clods: various types of melanocyticThis glossary term has not yet been described. neviThis glossary term has not yet been described..
- Large, polygonal light-brown clods: Unna nevus or Miescher nevus
- Small to medium-sized, round and oval brown clods: small congenital nevi, of "superficialThis glossary term has not yet been described." and "superficial and deep" types. Central hyperpigmentation is common in pigmented Spitz neviThis glossary term has not yet been described., and peripheral clods are usually smaller than those in the center.
- Blue clods: pigmented basal cell carcinomaThis glossary term has not yet been described..Differential diagnoses: While melanomaThis glossary term has not yet been described. and combined congenital nevus.
More than one colorColor (American English) or colour (Commonwealth English) is the characteristic of human visual perception described through color categories, with names such as red, yellow, purple, or blue.
Necessary to distinguish between the colorsThis glossary term has not yet been described. of melanin and the colors of other pigments Clods whose pigmentation is due to melanin are brown, blue or gray.
- Black clods: blood pigment hemoglobin.
- White, yellow or orange clods: keratin with (orange) or without (white or yellow) inclusions of melanin. Orange clods may also result from ulceration (serum crust).
- White or yellow clods are mainly found in seborrheic keratosesThis glossary term has not yet been described. and less often in Unna nevi. Orange clods also indicate a seborrheic keratosis or less often an Unna nevus.
- CombinationThis glossary term has not yet been described. of red, purple or black clods: hemangioma, vascular malformation or hemorrhage.
- Clods + colors of melanin (brown, blue or gray): symmetry of color distribution is assessed next.
- Clods with symmetrical color distribution: melanocytic nevi, i.e. superficial and deep congenital nevi, combined congenital nevi, Unna nevi and pigmented Spitz nevi
- Clods with asymmetrical color distribution: pigmented basal cell carcinoma and melanoma.