Common benign tumor of the epidermis formed from proliferation of keratinocytes
Frequently appears in multiples on the head, neck, and trunk (sparing the palms and soles) of older ind...
Typically begin as oval- or round-shaped...
Treatment is typically performed for cosmetic concerns but is usually not required.
Removal of seborrheic keratoses may be indicated if:
They are aesthetically displeasing or undesirable (comm...
Inflammation or irritation develops.
There is a change in appearance.
New seborr...
Higgins JC, Maher MH, Douglas MS. Diagnosing common benign skin tumors. Am Fam Physician. 2015;92(7):601–607. PMID: [View Abstract] ...
L82.1 Other seborrheic keratosis
L82.0 Inflamed seborrheic keratosis
398838000 senile hyperkeratosis (disorder)
442348004 Inflamed seborrheic keratosis (disorder)
446352002 Seborrheic ker...
Seborrheic keratoses are one of the most common benign tumors of the epidermis, and frequency increases with age.
While seborrheic keratoses do not need to be removed, there are many op...
Sign up for a 10-day FREE Trial now and receive full access to all content.
Figure 10.46. Seborrheic keratosis. Typical appearance of a flat, elevated plaque that appears \"stuck on.\" The lesion does not have deep extensions through the skin.
Figure 10.46. Seborrheic keratosis. Typical appearance of a flat, elevated plaque that appears \"stuck on.\" The lesion does not have deep...
<bold><italic>Figure 24-27</bold> Seborrheic keratosis. A‚</bold> This plaque is brown‚ dry‚ uniformly pigmented‚ sharply demarcated‚ and smoothly outlined. <bold>B‚</bold> The microscopic study shows a superficial proliferation of basal cells with small cysts of keratin.
<bold><italic>Figure 24-27</bold> Seborrheic keratosis. A‚</bold> This plaque is brown‚ dry&...
<b>FIGURE 24-75. Seborrheic keratosis.</b> Broad anastomosing cords of mature stratified squamous epithelium are associated with small keratin cysts.
<b>FIGURE 24-75. Seborrheic keratosis.</b> Broad anastomosing cords of mature stratified squamous epithelium are associated wi...
actinic keratosis: numerous keratoses over te scalp induced by chronic ultra-voilet exposure
seborrheic keratosis
Actinic keratosis
Actinic Keratosis Actinic keratoses are superficial, flattened papules covered by a dry scale. Often multiple, they may be round or irregular, and are pink, tan, or grayish. They appear on sun-exposed skin of older, fair-skinned persons. Though themselves benign, these lesions may give rise to squamous cell carcinoma (suggested by rapid growth, induration, redness at the base, and ulceration). Keratoses on face and hand, typical locations, are shown.
Actinic Keratosis Actinic keratoses are superficial, flattened papules covered by a dry scale. Often multiple, they may be round or irregu...