0000000000867324
AUTHOR
Klaus Brühl
False-positive I-131 whole-body imaging after I-131 therapy for a follicular carcinoma.
A 57-year-old man was treated with ablative radioiodine therapy for follicular thyroid carcinoma. The post-therapeutic whole body scans detected radionuclide accumulation in the area of the right occiput at the site of a cranial defect. The defect was caused by trauma in 1964. Bone scintigraphy did not show increased uptake in this area. Magnetic resonance imaging showed porencephaly, but it did not show a metasasis.
The risk of abducens palsy after diagnostic lumbar puncture.
Abducens palsy occasionally has been observed after diagnostic lumbar puncture (DLP).1-3 Its risk is not exactly known. We are aware of only one report, which mentions not a single case among 1,341 DLPs when using 22-gauge needles.4 At our clinic, an average of 800 inpatients a year undergo DLP. We usually use 22-gauge needles, and occasionally (in less than 5%), 20-gauge needles. Over a 14.5-year period, we saw two patients with abducens palsy—one unilateral, one bilateral—after DLP. This translates to a risk of less than 1 out of 5,800 DLPs. ### Patient 1. A 61-year-old man with type 2 diabetes noticed progressive weakness of the legs. Neurologic examination revealed proximal paraparesis,…