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Biomedical subjects

G Moulin

Publications and source records attributed to G Moulin.

At least 343 records · Page 19Linked to original sources

Imaging of fat thrombus in the inferior vena cava originating from an angiomyolipoma.

A rare case of fat thrombus in the inferior vena cava originating from an angiomyolipoma is reported. Diagnostic imaging including ultrasonography, CT, MRI, and cavography was performed preoperatively. MRI allowed the most complete preoperative staging because of specific fatty signal intensity and good assessment of renal vein involvement.

Adult↗

Percutaneous retrieval of a Strecker stent misplaced during TIPS.

During a transjugular intrahepatic portosystemic shunt (TIPS) procedure, a Strecker stent was accidently pushed into the superior mesenteric vein. After successful shunt placement, the stent was withdrawn into the hepatic vein. A multipurpose basket catheter was attached to the distal end of the stent and a loop snare to the proximal end. In this way it was possible to stretch the stent and retrieve it percutaneously through the jugular sheath.

Female↗

Juvenile nasopharyngeal angiofibroma: comparison of blood loss during removal in embolized group versus nonembolized group.

PURPOSE: This retrospective study was performed to assess the beneficial effect of preoperative embolization of juvenile nasopharyngeal angiofibromas (JNA) in terms of blood loss during surgery. METHODS: Intraoperative blood loss in a group of 7 patients who underwent 10 procedures for JNA without preoperative embolization was compared with the blood loss of 13 patients who underwent 16 procedures after embolization of one or both external carotid arteries. RESULTS: Mean blood loss was 5380 ml in patients without embolization and 1037.5 ml in those with embolization. This difference was not statistically significant because of the high standard deviation in the nonembolized group. However, when data were analyzed by tumor stage, a significant difference was noted between the embolized and the nonembolized patients with high-grade tumors but not between those with low-grade tumors. CONCLUSION: Preoperative embolization of the branches of the external carotid appears to facilitate removal of high grade tumors. The benefit of embolization in those with low-grade tumors is less clear cut, probably because there is less vascularity in low-grade tumors and so removal is easier.

Adolescent↗

TIPS for portal decompression to allow palliative treatment of adenocarcinoma of the esophagus.

We describe a case in which a transjugular intrahepatic portosystemic shunt (TIPS) was inserted to enable palliative treatment of an adenocarcinoma of the esophagus. The cirrhotic patient presented with esophageal varices in contact with a tumor of the esophagus. By relieving portal pressure, TIPS reduced the risk of hemorrhage during laser resection and prevented recurrence of esophageal varices.

Adenocarcinoma↗

Embolization of an intraparotid false aneurysm of the external carotid artery: case report.

A case of posttraumatic false aneurysm of the terminal part of the main external carotid artery involving the entire parotid gland is presented. Embolization with two microcoils allowed immediate thrombosis of the false aneurysm. The lumen of the external carotid artery remained open. Facial paralysis resolved. The atypical clinical presentation and the therapeutic steps in such a case are described.

Aneurysm↗

Non-squamous cell neoplasms of the larynx: radiologic-pathologic correlation.

A variety of benign and malignant non-squamous cell neoplasms may affect the larynx. Most of these uncommon laryngeal neoplasms are located beneath an intact mucosa, making diagnosis difficult with endoscopy alone, and sampling errors may occur if only traditional superficial biopsies are performed. In some laryngeal neoplasms, radiologic evaluation allows the correct diagnosis. Hemangiomas have very high signal intensity at T2-weighted magnetic resonance (MR) imaging and strong enhancement at both computed tomography (CT) and MR imaging after administration of contrast material. Phleboliths, which are pathognomonic for hemangiomas, are easily identified at CT. Chondrogenic tumors typically manifest with coarse or stippled calcifications at CT. Because of their high water content, chondrogenic tumors have very high signal intensity on T2-weighted MR images, whereas only moderate enhancement is observed after administration of contrast material. Lipomas typically manifest at both CT and MR imaging as homogeneous nonenhancing lesions. They are isoattenuating to subcutaneous fat at CT and isointense relative to subcutaneous fat with all MR pulse sequences. Metastases from renal adenocarcinoma typically demonstrate strong contrast enhancement and flow voids at MR imaging, and metastases from melanotic melanoma usually have high signal intensity on T1-weighted MR images and low signal intensity on T2-weighted images owing to the paramagnetic properties of melanin. Although radiologic findings are nonspecific in most other non-squamous cell neoplasms of the larynx (eg, Kaposi sarcoma, hematopoietic tumors, tumors of the minor salivary glands, metastases from amelanotic melanoma), cross-sectional imaging can play an important role in the diagnostic work-up of these unusual tumors by delineating the extent of submucosal tumor spread and directing the endoscopist to the appropriate site for the deep, transmucosal biopsies needed to establish the diagnosis. In addition, CT and MR imaging are crucial for posttherapeutic monitoring and early detection of local recurrence.

Carcinoma, Squamous Cell↗