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HEAD MASS
A localized mass on the head is usually a skin lesion, a lesion of the bone, or a protrusion of intracranial tissue through the bone. An extensive discussion of skin masses may be found on page 469, but most head masses originating from the skin are sebaceous cysts, caruncles, or lipomas. Lesions of the skull that may present as focal lesions are metastatic tumors, multiple myeloma, osteitis fibrosa cystica (hyperparathyroidism), and osteomas. Brain tumors, subdural hematomas, and epidural abscesses may cause proliferation of the bone over the lesion and produce a mass. Congenital meningoceles and meningoencephaloceles may protrude through defects in the skull, producing large focal lesions in the midline.
HEAD MASS
Approach to the Diagnosis
The approach to the diagnosis includes excision or biopsy of skin lesions, skull x-rays, CT scans, bone scans, and, if necessary, a bone biopsy. A neurosurgeon should be consulted before ordering expensive diagnostic tests.
Copyright Details: Differential Diagnosis in Primary Care, Copyright © 2007 Lippincott Williams & Wilkins.
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Copyright notice for book excerpts: Copyright © 2008 Lippincott Williams & Wilkins. All rights reserved.
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More About This Book:
Title: Differential Diagnosis in Primary Care Authors: R. Douglas Collins Publisher: Lippincott Williams & Wilkins Copyright: 2007 ISBN: 0-7817-6812-8 
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