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Chapter 40. Carotid Body Tumors and Vascular Anomalies

Which of the following is true?

A. Vascular malformations are congenital.

B. Vascular malformations can be classified as slow flow and fast flow.

C. Vesicles on the mucosa or skin overlying a vascular lesion are diagnostic of a lymphatic malformation.

D. Venous malformations are compressible and distend when in a dependent position.

E. All of the above are true.

Which of the following is true?

A. There are two types of hemangiomas: congenital and infantile.

B. Hemangiomas have three phases of growth.

C. Hemangiomas are identical to placenta.

D. Propranolol is the standard treatment for symptomatic hemangiomas.

E. All of the above is true.

Which of the following is characteristic of arteriovenous malformations?

A. Are compressible and expand when reclining or bending over

B. Best treated with a flash-lamp pulsed-dye laser

C. Expand by hemodynamic mechanisms and may become tumors with cell proliferation

D. Have a proliferation and an involution phase

E. Are identical to Placenta

A 56-year-old patient presents to the ER with a 3-cm fixed, nontender mass in the left upper neck. A contrasted CT of the neck shows a heterogeneous-enhancing lesion that splays ICA and ECA. In the workup of this patient all the following are indicated, except:

A. Flexible laryngoscopy

B. Ultrasound-guided fine-needle aspiration biopsy

C. Plasma-free metanephrines

D. Genetic testing

Histologic findings in carotid body tumors include all of the following except:

A. Physaliferous cells.

B. Zellballen configuration.

C. Sustentacular cells.

D. Chief cells.

E. All of the above findings are seen in carotid body tumors.

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