Physician-hospital joint ventures: issues, risks and benefits.
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Biomedical subjects
Publications and source records attributed to R L Goldman.
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A case of florid proliferative sialometaplasia arising in salivary ductal inclusions in an intraparotid lymph node is described. This lesion probably represents an exuberant response to sialadenitis. Other entities that enter into its differential diagnosis in this particular location are discussed. Except for Warthin tumors, lesions of clinical import originating from such inclusions are rare.
We report a case of monomorphic adenoma, dermal analogue type, arising in a typical lymphoepithelial cyst of the parotid gland. This case supports the hypothesis that lymphoepithelial cysts of the major salivary glands arise from inclusions of salivary gland tissue in lymph nodes.
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Kikuchi's necrotizing lymphadenitis has recently been reported in the United States where it has not previously been recognized. In the past year three cases were seen in a community hospital in San Francisco. The histologic appearance and clinical features were felt to be sufficiently characteristic to be diagnostic.
An unusual case of metastatic renal cell carcinoma presenting as a submandibular salivary gland tumor is presented, and its differentiation from a primary clear cell neoplasm of salivary origin is discussed.
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Three cases of necrobiotic granulomas of the uterine cervix occurring in patients with a history of previous cervical surgery are described. This distinctive lesion histologically resembles a rheumatoid nodule but is not associated with infection or connective tissue disease. The clinicopathologic features of these cases are virtually identical to analogous postoperative lesions that have been described in the prostate. Such necrobiotic granulomas seem to be a result of prior surgery and should not be confused with other more portentous granulomatous diseases.
Foreign body pulmonary emboli from a cranial venous sinus are unusual. Two patients are presented with gunshot wounds to the head who subsequently developed foreign body pulmonary emboli. Neither had any pulmonary complaints at presentation or during followup. Radiologists and primary care physicians should be aware of the possibility of distal missile pulmonary emboli when a foreign body enters the peripheral venous system or an intracranial venous sinus.
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We describe two cases of benign neural invasion by proliferated islet cells in a background of chronic pancreatitis, and cite additional examples of benign neural invasion in other locations. This phenomenon, which represents the presence of collections of benign epithelial structures in a nerve or in a perineural space, is usually associated with an adjacent proliferative, but benign process, suggesting that mechanical forces may produce displacement along planes of least resistance. The important point is that neural invasion is not synonymous with malignancy, and that benign epithelial structures can be encountered in both a perineural and intraneural location.
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We report a case of angiomyolipoma of the penis in a fifty-three-year-old patient. This lesion is rare outside of its usual intrarenal location, and, to our knowledge, has never before been reported to occur in the penis.
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