Neoplasia

For each of the following patients, select the most likely neoplasm:

1. A 72-year-old man has a 0.5 cm nodule with a central erosion and heaped up pearly pink borders located at the lateral corner of his left eyelid. It is not particularly painful and it does not bleed. He has noted this lesion to be slowly enlarging for a number of years:

2. A 50-year-old man with chronic pain in his left hip region for several months is found to have a 7 cm mass expanding and eroding the left ischium, as seen on a radiograph of the pelvis:

3. An encasing mass composed of dense tan tissue surrounds the left lung of a 72-year-old man at autopsy. The man had experienced progressive dyspnea for several years:

4. A 1 cm well-circumscribed mass is located in the submucosa of the jejunum of a 45-year-old man who undergoes laparotomy for a gunshot wound to the abdomen. On sectioning, the mass is uniformly yellow and soft:

5. A 45-year-old man complaining of headaches for several weeks is found by computed tomographic (CT) scan to have an ill-defined 3 to 4 cm mass within the left cerebral hemisphere:

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A. Adenocarcinoma B. Astrocytoma C. Basal cell carcinoma D. Carcinoma in situ E. Chondrosarcoma
F. Choristoma G. Hamartoma H. Hemangioma I. Intradermal nevus J. Kaposi sarcoma
K. Leiomyosarcoma L. Lipoma M. Mature cystic teratoma N. Mesothelioma O. Myxoma
P. Non-Hodgkin lymphoma Q. Plasmacytoma R. Seminoma S. Squamous cell carcinoma T. Tubular adenoma
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