Benign Skin Lesions

Question 1

Answer 1

Acquired or Congenital Nevi

• acquired: benign pigmented or non-pigmented lesions that come from melanocytes
  
  • age 3-5
• Larger congential melanocytic nevus may be removed to reduce risk of malignant melanoma
• may undergo transition to malignant melanomas

Question 2

Answer 2

Seborrheic Keratosis

• benign proliferation of the cutaneous basal cells that prodcue a smooth or warty papule or plaque
• color varies: tan to waxy yellow, flesh colored, or dark brown/black
• often oval and greasy with a hyperkeratotic scale

Question 3

Answer 3

Solar Lentigo

• “age/liver spots”
• flat tan, brown or black spots on the skin
• common with age
• appear most often on sun-exposed areas such as the face, hands, shoulders, and arms
• age spots are harmless and do not need treatment

Question 4

Answer 4

Dermatofibroma

• superficial benign fibrous histiocytoma
• cutaneous nodule of unknown etiology
• more common in women
• usually develop on the extremities especially the lower legs
• usually asymptomatic but can have pruritus and tenderness

Question 5

Answer 5

Pyogenic granuloma

• small, raised, and red bumps on the skin
• smooth surface and can be moist
• bleed easily due to high # of blood vessels
• benign growth
• skin lesion that can develop after an injury

Question 6

Answer 6

Infantile Hemangioma

• aka superficial hemangiomas or strawberry hemangiomas
• femals > males
• proliferation of mast cells that may promote angiogenesis
• bright red papules and plaques with smal capillary projections
• usually only one lesion present on head, neck or trunk
• will begin to disappear 12-16 months of age
  
  • most will completely disappear by 5-9 years

Question 7

Answer 7

Hypertrophic Scar

• raised but remains within the original boundaries of the wound
• tend to regress over time
• imbalance of collagen synthesis and degradation

Question 8

Answer 8

Keloid Scar

• raised scar that extends beyond the boundaries of the original wound
• likely to recur after surgical removal
• may have genetic involvement
• keloids tend to not regress (unlike hypertrophic scars)
• imbalance between collagen synthesis and collagen degradation

Question 9

Answer 9

Arcochordon

• “skin tag”
• small, soft, common, benign pedunculated neoplasm
• often found in obese patients
• skin colored or hyperpigmented
• surface nodules or peduncules, or papillomas

Question 10

Answer 10

​Angioma

benign lesion

• benign growth of small blood vessels
• these tumors can be located anywhere on the body
• Cherry angiomas are due to aging and are benign

Question 11

Answer 11

Telangiectasa

• benign
• “spider veins”
• small, widened blood vessels visible to the skin
• Chronic venous disease: can range from asymptomatic telangiectasias to varicose veins to chronic vascular insufficiency

Question 12

Answer 12

Sebacious Hyperplasia

• benign growth of sebacious gland
• Commonly occurs in middle aged or older peopel
• looks like a single/multiple white/yellowish papules on the forehead, cheeks, and nose
• can occasionally occur on the areola, chest, scrotum, and penis