In a 73-year-old woman, on the leg
What to see at dermoscopy:
-cerebriform pattern
-fissures and ridges
-sharp borders
-scar-like depigmentation (lower portion of lesion)
-scaly surface at the lower portion of lesion
Although dermoscopy is in favor of seborrheic keratoses, biopsy at the lower portion of lesion was indicated to rule out a squamous cell carcinoma.
Hitopathology correlation: actinic keratoses.
In a 45-year-old woman, on the arm
What to see at dermoscopy:
-branched streaks and dots
-blotches
-hypopigmented and structureless area
-melanosis or peppering
Extirpation was indicated and histology confirmed a melanoma in situ
In a 45-year-old women, on the abdomen
What to see at dermoscopy:
-aggregated yellow globules
-fine nonarborizing blood vessels
-at the right portion of lesion, a dark pigmented structureless area with milia-like cysts
Biopsy was suggested at yellow globules area
Dermoscopy in favour of Nevus sebaceous of Jadassohn (yellow lobularlike structures) and seborrheic keratosis (dark lesion)
Comments: the differential diagnosis of yellow loburlarlike structures visualized on dermoscopy includes sebaceous hyperplasia, sebaceous adenoma and nevus sebaceous of Jadasshon. For more information: “The dermoscopic differential diagnosis of yellow loburlike structures”, Kim, N et al, Arch Dermatol , 2008, 144(7):962
In a 76-year-old woman, on the upper eyelid
What to see at dermoscopy:
-pseudonetwork with irregular pigmentation around follicular openings
-milia-like cysts
-hypopigmented areas
-scar-like depigmentation (lower portion of lesion)
-melanosis (left side of lesion)
Biopsy at a pigmented spot was indicated
Histopathology confirmed the Lentigo solar diagnosis
Comments: frequently, slate-gray dots and asymetric follicular openings pigmentation are the earliest feature of lentigo maligna. Those findings prompt a biopsy to rule out malignancy