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PubMed · 9407202

Diagnostic problems in thyroid FNAs.

H Galera-Davidson
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Abstract

The use of FNA cytology to diagnose pathologic conditions of the thyroid has increased considerably in recent years, particularly since it has reduced by half the number of patients undergoing surgery. On the one hand, this diagnostic technique has attracted a certain amount of well justified criticism, but on the other, recent cytohistologic correlations and new scientific knowledge are continually improving its application. We shall discuss the latter aspect in more detail and deal with some simple but informative points which the pathologist may find useful in daily practice.

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Biopsy, NeedleCytodiagnosisFalse Negative ReactionsHumansThyroid GlandThyroid NeoplasmsJournal Article

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H Galera-Davidson. 1997. Diagnostic problems in thyroid FNAs.. https://doi.org/10.1002/(sici)1097-0339(199712)17%3A6%3C422%3A%3Aaid-dc9%3E3.0.co%3B2-a

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Targeting difficult accessible breast lesions: MRI-guided needle localization using a freehand technique in a 3.0 T closed bore magnet.

PURPOSE: To report the accuracy of magnetic resonance imaging (MRI)-guided needle localization for diagnosis of MRI detected suspicious breast lesions located in difficult accessible regions of the breast, using the freehand method in a 3.0 T closed bore magnet. MATERIALS AND METHODS: In five patients with five MRI-only breast lesions underwent MRI-guided needle localization for histopathologic evaluation of the lesions. All interventional procedures were performed in a 3.0 T MRI system with the patient in prone position and by using a dedicated phased array breast coil. MRI-guided needle localizations were performed by using a freehand technique. In our study, the high-resolution scan allowed preprocedural localization of all lesions without use of contrast enhancement. In all cases contrast-enhanced MRI was performed after insertion of the wire to confirm the tip of the wire in direct contact with the enhancing lesion. RESULTS: Needle localizations were performed in five patients. Histopathologic evaluation of tissue after surgery excision biopsy revealed one lymph node, three invasive ductal carcinoma and one ductal carcinoma in situ. Lesion size varied from 6 to 30 mm. Mean duration time was 25 min. No complications occurred during the intervention method. In the patient with the benign lesion control MRI of the breast after 6 months confirmed lesion removal. CONCLUSIONS: MRI-guided needle localization by using a freehand technique in a 3.0 T closed bore magnet is a safe and accurate method for diagnosis of difficult accessible breast lesions only visible on MRI.

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