The American Society of Dermatopathology
70-year-old with rubbery mass on lower back
Asymptomatic nodule on a 55-year old male
Asymptomatic red nodule on the posterior auricular scalp
Painless pink nodule on a thigh of a 94-year-old man
Sweat gland tumors19-year-old male with a left leg lesionAsymptomatic nodule of the lower eyelidAsymptomatic nodule on the finger
Fibrous tumors45-year-old female with a finger mass (with zoomable virtual slide)A 24-year-old African American male with a firm, non-painful nodule on the shoulderA 79-year-old-male with a "lump" on the thighAn Infantile Scalp Mass (with zoomable virtual slide) Back Mass, Elderly MaleErythematous Lesion on the BackFour-year-old with a flank massGrouped red-brown papules on the left dorsal handMass on the foot of a 5-year-old girlNail bed lesionPainless periorbital massSubcutaneous mass in a healthy infantUpper thigh nodule in a 13-year-old girl
Neural tumorsStable nodular lesion on the midline lower back (with zoomable virtual slide)
Vascular tumors85-year-old man with small pink papuleA slowly growing red nodule on the handBack NoduleMobile subcutaneous nodule on the thigh of a 29-year-old male
Other tumorsMultiple skeletal fractures and asymptomatic foot nodule (with zoomable virtual slide)Solitary mass on the right thigh of an adolescentSolitary nodular lesion on left legSubcutaneous nodule on the neckVulvar mass
Undifferentiated tumors8-year-old boy with subcutaneous nodule of the upper arm
Melanocytic tumorsAn 80-year-old male with a mass on the upper lipFlesh colored papule on the neck of a 46-year-old maleSpeckled pigmented patch
HematopoieticErythematous plaque on chest of 62-year-old female
FollicularA 48-year-old female with a flesh-colored papule on the faceA verrucous plaque on the wristAsymptomatic hyperkeratotic papule of the left forearm
MesenchymalA 68-year-old female with 10 x 10 cm thigh massEnlarging vulvar growth in a 51-year-old female
Thirty-two-year-old female with intermittent pain of the umbilicus
Psoriasiform70-year-old man with a scaly erythematous eruption
Bullous44-year-old with diffuse outbreak of blistering rashPainful mucocutaneous eruption in a middle-aged man
Granulomatous or Histiocytic70-year-old man with a scrotal papule
Other inflammatoryA 72-year-old male with a red papule on the upper backAn Erythematous, Friable, Pedunculated Papule on the Abdomen
23-year-old immunocompromised female with asymptomatic dermal plaque on proximal thigh
A 79-year-old-male with a "lump" on the thigh
Asymptomatic penile ulcer
Indurated plaque on the right upper extremity
Bacterial and spirochetalA 25-year-old male with a painful nodule in the perianal region Eschar on the leg of a 56-year-old womanWrist nodule on a 74-year-old man
FungalHemorrhagic lesions in a female with systemic lupus erythematosusPustular Dermatitis
Protozoa, helminth, marine and other infestationsCrusted plaque on the cheek of a medical student
Viral27-year-old woman with several macules on the chest and neck
10-year-old with morbilliform rash
47-year-old male with anosacral plaque
62-year-old with patches on the knee
A 2-year-old girl with verrucous papules
A 63-year-old woman with an enlarging erythematous plaque on the forearm (with zoomable virtual slide)
A persistent gluteal plaque
Asymptomatic skin colored papules in a patient with rheumatoid arthritis
Enlarging right thigh mass in a morbidly obese patient
Multiple small yellow papules on the left lower neck
Diffuse dry, scaly skin with occasional blisters
66-year-old female with a scalp nodule
A slowly enlarging pearly papule
60-year-old male with a slowly growing subcutaneous nodule on the leg for six months
Fibrous tumorsA 31-year-old presents with a papule on the nasal bridge
Vascular tumorsEyebrow mass in a 55-year-old maleNodule on the scalp of a 76-year-old male
Lymphomatous infiltratesAsymptomatic ecchymotic plaques on the chest
BullousIntertriginous LesionsNine-month-old female with pruritic blistering
A 31-year-old presents with a papule on the nasal bridge
A 34-year-old female with a slowly enlarging yellow plaque on her left lower abdomen
A mass in the breast of a 34-year-old female
Back Mass, Elderly Male
Tender nodule on left calf of a 48-year-old-male
Fibrous tumorsAn 11-year-old healthy male with an asymptomatic nodule on the scalpSolitary nodule on the left calf of an elderly male
90-year-old female with breast erythema and axillary lymphadenopathy
An Asymptomatic Mass on the Wrist of a 44-year-old Female