False positive localisation of C-11 methionine in a colloid nodule

Frequency of false positive responses in patients with multiple positive reactions in patch test

Background and aim: Contact dermatitis is an inflammatory skin response due to contact with environmental materials manifested as acute or chronic eczema. Patch test is the standard test to recognize responsible allergen. The objective of this study was to evaluate the frequency of false positive patch test responses in patients with Exited Skin Syndrome (ESS).Materials...

C-ANCA Positive Vasculitis in a Case of Amyloidosis

Follicular thyroid cancer avid on C-11 Methionine PET/CT

A case of follicular thyroid cancer with intense focal Methionine uptake on 11C-Methionine PET/CT is reported here. The use of 11C-Methionine PET in differentiated thyroid cancer is currently being investigated as a surrogate tracer compared to the more widely used 18F-FDG PET. This case illustrates the potential incremental value of this modality, not only in the localizing of parathyroid aden...

False-negatives in thyroid nodule aspiration cytology.

To the Editor—We congratulate Cheung et al1 for providing local data on the accuracy of fine-needle aspiration cytology (FNAC) of non-toxic thyroid nodules. In 2003, we retrospectively analysed the results of 192 FNAC of thyroid nodules performed in Queen Elizabeth Hospital between January and June 2001. Forty-three of those patients underwent thyroidectomy and a comparison of the histopatholog...

HIV false positive results and Flu vaccination

Abstract False positive results are the major problem influencing interpretation of Clinical Laboratory test. They are originated mostly in the other diseases, technical errors and the recent vaccination. The problem has been presented since 1991 is positive HIV test after influenza Vaccination (1). The False positive has been reported in Cases using Eliza, one of The most common test to screen...