In a 54-year-old woman, on the face (persistence of lesion after topical TCA)
What to see at dermoscopy:
-irregular annular-granular pattern [pseudonetwork] (circle)
-strawberry appearence
Although Dermoscopy was in favor of actinic keratosis biopsy over the pigmented site was indicated. Irregular annular-pattern should raise the suspicion of lentigo maligna
In a 62-year-old woman, on the eyebrow
What to see at dermoscopy:
-pseudonetwork
-strawberry appearance
-rosette sign (circle)
Dermoscopy in favor of actinic keratosis
Comment: rosette sign is a new dermoscopic pattern where 4 white points are arranged as a 4-leaf clover inside the follicular openings.
For more information read: Cuellar F.et al “New dermoscopic pattern in actinic Keratosis and related conditions”. Arch Dermatol 2009; 145: 732
In a 63-year-old man, on the scalp
What to see at dermoscopy:
-strawberry appearance
-annular-granular pattern
-hyperkeratosis at the low portion of lesion
-incontinentia pigmenti
Dermoscopy in favor of pigmented actinic keratosis
Comment: biopsy was suggested to rule out a squamous cell carcinoma
In a 52-year-old woman, on the cheek
What to see at dermoscopy:
-irregularly pigmented pseudonetwork (annular-granular pattern)
-light to medium brown pigmentation
-strawberry appearance and telangectasia
-white to yellow surface scale
Biopsy was indicated at the pigmented site
Histopathological correlation: actinic keratosis
In a 73-year-old man, on the lower eyelid
What to see at dermoscopy:
-irregularly pigmented pseudonetwork with an annular-granular pattern
-light to medium brown pigmentation
-strawberry appearance
-white to yellow surface scale
Biopsy was indicated.
Histopathological correlation: actinic keratosis