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Biomedical subjects

J L Weissman

Publications and source records attributed to J L Weissman.

86 records · Page 5Linked to original sources
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Thornwaldt cysts.

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Cysts↗
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Therapeutic embolization for control of epistaxis in a patient with hereditary hemorrhagic telangiectasia.

This article describes a woman with hemorrhagic telangiectasia, or Osler-Weber-Rendu disease, with recurrent nosebleeds despite prior septal dermoplasty and laser treatments. Telangiectasias were clearly shown at the time of angiography. Embolization of abnormal vessels on both sides resulted in cessation of epistaxis for many months. Bilateral studies are important, even when the epistaxis seems to be unilateral.

Aged↗
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Computer-assisted intraoperative navigation during skull base surgery.

PURPOSE: In patients with diseases of the cranial base, anatomical landmarks are often obliterated by tumor inflammatory diseases or previous surgery. The surgeon may fail to recognize important anatomical structures or tumor margins, increasing the morbidity of the surgery and downgrading the oncological outcome. MATERIALS AND METHODS: The ISG Viewing Wand is an intraoperative navigational device that uses a position-sensing articulated arm linked to a computer that allows the surgeon to correlate the anatomy of the patient with the computerized display of the reformatted images of preoperative computerized tomography or magnetic resonance. We used the ISG system in 20 patients undergoing skull base surgery for the treatment of tumor inflammatory diseases and trauma. RESULTS: The use of the ISG wand translated into a decreased need for the resection of vital structures and provided reliable mapping of the boundaries of the paranasal sinuses and tumor margins. CONCLUSION: Intraoperative navigation is a promising technology that complements the surgeon's interpretation of the surgical field. Further refinements of this technology will ease the incorporation of these intraoperative navigation systems into other surgical procedures.

Decision Making, Computer-Assisted↗
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High signal from the otic labyrinth on unenhanced magnetic resonance imaging.

High signal from the otic labyrinth was observed on precontrast MR scan of two patients who presented with sudden hearing loss and vertigo. The authors suggest the possibility that the high signal was caused by hemorrhage but that clinical significance and therapeutic implications of this finding need further study.

Adult↗
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Ameloblastoma of the maxilla: CT and MR appearance.

This paper describes the CT and MR appearance of an ameloblastoma that involved the maxilla, infratemporal fossa, and adjacent structures. Although not pathognomonic, the multicystic appearance of an ameloblastoma may suggest the correct diagnosis.

Aged↗