Exceptions
From dermoscopedia
This is the page on the glossary term Exceptions which is relevant on dermoscopedia. See also the list of terms.
Description
This glossary term has not yet been described.
Occurrences
The following page uses exceptions as keyword:
| Page | Summary |
|---|---|
| Exceptions to rules and mimickers | The two-step dermoscopy algorithm aims to differentiate between melanocytic and non-melanocytic lesions and to determine if a melanocytic lesion is benign or malignant. While algorithms serve as guidelines that apply to the majority of cases, one should remember that every rule has exceptions. The recognition of the exceptions is essential for the maintenance of high diagnostic precision. |
Related files (images / graphics)
No file uses exceptions as keyword.
| Feature | Differential Diagnosis | Mimickers |
|---|---|---|
| Negative Network | Melanoma | Ridges of Seborrheic keratoses |
| Spitz/Reeds | Globular Structures of dermatofibromas | |
| Severe Dysplastic nevi | ||
| CMN | ||
| Streaks | Melanoma | Leaf-like areas of BCC |
| Spitz/Reeds nevus | Ridges (fat-fingers) of seborrheic keratoses | |
| Pigmented periphery of Bowen's disease | ||
| Pigmented periphery of cutaneous mets | ||
| Network | Nevi | Fingerprinting of solar lentigines |
| Melanoma | Cerebriform pattern of seborrheic keratoses | |
| Solar lentigo | ||
| Ink spot lentigo | ||
| Dermatofibroma | ||
| Accessory nipple | ||
| Mastocytosis | ||
| Globules | Nevus | Lacuna |
| Melanoma | Ovoid nests | |
| Clonal Seborrheic keratosis | Blue-gray ovoid nests | |
| Cutaneous metastasis | Pigmented cysts | |
| Comedo-like openings | ||
| Peppering/granularity | Melanoma | Blue-gray dots of BCC |
| Lichen planus-like keratosis | Linear brown dots of pigmented Bowen’s disease | |
| Pigmented actinic keratosis | ||
| Nevi (focal and limited) | ||
| Vessels | Various melanocytic and non-melanocytic lesions | Small ulcerations as in superficial BCC |
| Linear brown/red dots of pigmented Bowen’s disease | ||
| Red globules of BCC | ||
| Background vessels in normal skin and sun-damaged skin | ||
| Blotch | Melanoma | Subcorneal hemorrhage |
| Clark's nevi | Thrombosed angioma | |
| Blue nevus | Black lamella | |
| Reed's nevi | Exogeneous pigmentation | |
| Heavily pigmented seborrheic keratoses | ||
| Heavily pigmented BCC | ||
| Venous angiomas | ||
| Shiny-white streaks | Melanoma | Negative network |
| Spitz nevus | White lines of scalp nevi | |
| BCC | Wickham striae | |
| Dermatofibroma | Rail lines (pyogenic granuloma) | |
| Scar | ||
| Circles-white | Actinic keratoses | Milia-like cysts |
| SCC | Lobules of sebaceous hyperplasia | |
| White clods of BCC | ||
| Lacunes of lymphangiomas | ||
| White globules of balloon cell nevi | ||
| Folliculitis | ||
| Molluscum | ||
| Circles-brown | Dermatofibroma | Curved lines of solar lentigines and seborrheic keraotoses |
| Bowen's disease | Comedo-like openings | |
| Facial melanoma | ||
| Facial nevi | ||
| Facial solar lentigines | ||
| Angulated lines | Melanoma of sun-damaged skin | Spoke-wheel areas |
| Pigmented actinic keratosis | Fingerprinting | |
| Lichen planus-like keratosis | Prominent network of congenital nevi and Clark's nevi | |
| Prominent lines of ink spot lentigo | ||
| Lattice like pattern of acral nevi |
