Q.1 Which of the following is the most common benign skin tumor in adults?
Seborrheic keratosis
Basal cell carcinoma
Squamous cell carcinoma
Melanoma
Explanation - Seborrheic keratosis is a common benign epidermal tumor, typically seen in middle-aged and older adults.
Correct answer is: Seborrheic keratosis
Q.2 Dermatofibroma is best described as:
A soft, cystic lesion
A firm, hyperpigmented nodule
A flat, scaly patch
A fluid-filled blister
Explanation - Dermatofibromas are firm, often hyperpigmented nodules, usually on the lower extremities, and are benign fibrous histiocytomas.
Correct answer is: A firm, hyperpigmented nodule
Q.3 Which benign skin tumor is commonly associated with HPV infection?
Verruca vulgaris
Nevus sebaceus
Lipoma
Dermatofibroma
Explanation - Verruca vulgaris, or common warts, are caused by infection with human papillomavirus (HPV).
Correct answer is: Verruca vulgaris
Q.4 Lipomas are typically:
Painful and fast-growing
Soft, mobile, and slow-growing
Firm and fixed
Red and scaly
Explanation - Lipomas are benign tumors of adipose tissue that are soft, mobile under the skin, and grow slowly.
Correct answer is: Soft, mobile, and slow-growing
Q.5 A 'stuck-on' appearance is characteristic of which benign skin tumor?
Seborrheic keratosis
Dermatofibroma
Epidermal nevus
Neurofibroma
Explanation - Seborrheic keratoses often have a distinctive 'stuck-on' appearance, as if they are pasted onto the skin surface.
Correct answer is: Seborrheic keratosis
Q.6 Which of the following is a common benign tumor of peripheral nerves?
Neurofibroma
Sebaceous cyst
Hemangioma
Dermatofibroma
Explanation - Neurofibromas are benign tumors arising from peripheral nerves and may appear as soft, flesh-colored nodules.
Correct answer is: Neurofibroma
Q.7 Cherry angiomas are:
Malignant vascular tumors
Benign red papules
Pigmented moles
Cystic lesions
Explanation - Cherry angiomas are common benign vascular lesions, presenting as small red papules, especially in adults over 30.
Correct answer is: Benign red papules
Q.8 Which benign tumor is often described as 'button-like' and dimple sign positive?
Dermatofibroma
Epidermoid cyst
Lipoma
Seborrheic keratosis
Explanation - Dermatofibromas often demonstrate the 'dimple sign', where lateral pressure causes a central depression.
Correct answer is: Dermatofibroma
Q.9 Which of the following benign tumors commonly occurs on the scalp and face of children?
Pilomatricoma
Lipoma
Dermatofibroma
Nevus sebaceus
Explanation - Pilomatricomas are benign tumors arising from hair matrix cells, typically seen in children on the scalp or face.
Correct answer is: Pilomatricoma
Q.10 Epidermoid cysts usually contain:
Serous fluid
Keratin and lipid debris
Blood
Pus exclusively
Explanation - Epidermoid cysts are lined by squamous epithelium and contain keratinous and lipid material.
Correct answer is: Keratin and lipid debris
Q.11 Which benign tumor has a classic appearance of multiple small, skin-colored papules along the eyelid margin?
Syringoma
Neurofibroma
Seborrheic keratosis
Lipoma
Explanation - Syringomas are benign eccrine sweat gland tumors presenting as small papules, often around the lower eyelids.
Correct answer is: Syringoma
Q.12 A benign tumor characterized by proliferation of sebaceous glands, usually present at birth, is:
Nevus sebaceus
Seborrheic keratosis
Dermatofibroma
Cherry angioma
Explanation - Nevus sebaceus is a congenital lesion composed of sebaceous glands and may evolve over time.
Correct answer is: Nevus sebaceus
Q.13 Which benign skin tumor often presents as a pedunculated lesion in intertriginous areas?
Skin tag (acrochordon)
Seborrheic keratosis
Dermatofibroma
Lipoma
Explanation - Skin tags are soft, pedunculated benign lesions, commonly in neck, axillae, and groin.
Correct answer is: Skin tag (acrochordon)
Q.14 Which benign tumor may calcify and present as a hard nodule beneath the skin, most commonly in children?
Pilomatricoma
Lipoma
Dermatofibroma
Epidermoid cyst
Explanation - Pilomatricomas often calcify and present as firm nodules in children, usually on the face or upper extremities.
Correct answer is: Pilomatricoma
Q.15 Which benign skin tumor arises from adipose tissue?
Lipoma
Dermatofibroma
Seborrheic keratosis
Syringoma
Explanation - Lipomas are benign tumors derived from fat cells, usually presenting as soft, mobile subcutaneous nodules.
Correct answer is: Lipoma
Q.16 Which of the following is considered a benign melanocytic lesion?
Compound nevus
Melanoma
Basal cell carcinoma
Squamous cell carcinoma
Explanation - Compound nevi are benign melanocytic proliferations involving both the dermis and epidermis.
Correct answer is: Compound nevus
Q.17 Which benign tumor shows a characteristic 'honeycomb' pattern on dermoscopy?
Seborrheic keratosis
Dermatofibroma
Lipoma
Syringoma
Explanation - Seborrheic keratoses often show a 'honeycomb' or 'cerebriform' pattern on dermoscopy.
Correct answer is: Seborrheic keratosis
Q.18 Which of the following benign tumors is prone to inflammation and rupture?
Epidermoid cyst
Lipoma
Dermatofibroma
Syringoma
Explanation - Epidermoid cysts can become inflamed or infected, sometimes rupturing and releasing keratinous material.
Correct answer is: Epidermoid cyst
Q.19 Which benign skin tumor is composed of fibroblasts and histiocytes?
Dermatofibroma
Lipoma
Seborrheic keratosis
Syringoma
Explanation - Dermatofibromas are benign fibrous tumors composed of fibroblasts and histiocytes, commonly found on the extremities.
Correct answer is: Dermatofibroma
Q.20 Which benign lesion is often associated with aging and commonly appears on the trunk?
Cherry angioma
Pilomatricoma
Syringoma
Dermatofibroma
Explanation - Cherry angiomas are vascular lesions that appear with increasing age, commonly on the trunk.
Correct answer is: Cherry angioma
Q.21 Which of the following benign tumors is derived from eccrine sweat glands?
Syringoma
Lipoma
Seborrheic keratosis
Dermatofibroma
Explanation - Syringomas are benign tumors originating from eccrine sweat ducts, often seen on eyelids.
Correct answer is: Syringoma
Q.22 Which benign lesion may be removed for cosmetic reasons despite being harmless?
Skin tag
Pilomatricoma
Seborrheic keratosis
All of the above
Explanation - Benign lesions like skin tags, pilomatricomas, and seborrheic keratoses are harmless but may be removed for cosmetic or symptomatic reasons.
Correct answer is: All of the above
Q.23 Which benign tumor is usually solitary, firm, and tethered to the overlying skin?
Dermatofibroma
Lipoma
Seborrheic keratosis
Syringoma
Explanation - Dermatofibromas are typically solitary, firm nodules tethered to the skin, often on lower limbs.
Correct answer is: Dermatofibroma
Q.24 Which benign skin tumor may present as multiple lesions in patients with familial syndromes?
Neurofibroma
Lipoma
Dermatofibroma
Syringoma
Explanation - Multiple neurofibromas may occur in neurofibromatosis type 1, a familial syndrome.
Correct answer is: Neurofibroma