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Presented by Dr. Pedram Argani and prepared by Dr. Monica Butcher
This is a finger nodule on a 45 year old male.
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Question 1 of 1
1. Question
This is a finger nodule on a 45 year old male.
Diagnosis:
Correct
Answer: D
Histologic Description: The lesion has a rounded or lobular appearance at low power. There is a central larger feeder vessel, associated with clusters or lobules of small capillaries. These are the typical features of pyogenic granuloma/lobular capillary hemangioma.
Differential Diagnosis: Angiosarcoma would demonstrate infiltration and greater cytologic atypia. Epithelioid hemangioendothelioma would not contain well-formed vessels, and would feature vacuolated blister cells in a myxochondroid background. Granulation tissue would contain inflamed stroma and capillaries without the lobular pattern and feeder vessels seen in the current lesion.
Incorrect
Answer: D
Histologic Description: The lesion has a rounded or lobular appearance at low power. There is a central larger feeder vessel, associated with clusters or lobules of small capillaries. These are the typical features of pyogenic granuloma/lobular capillary hemangioma.
Differential Diagnosis: Angiosarcoma would demonstrate infiltration and greater cytologic atypia. Epithelioid hemangioendothelioma would not contain well-formed vessels, and would feature vacuolated blister cells in a myxochondroid background. Granulation tissue would contain inflamed stroma and capillaries without the lobular pattern and feeder vessels seen in the current lesion.
