When dementia is misdiagnosed

When every $P$-flat ideal is flat

In this paper‎, ‎we study the class of rings in which every $P$-flat‎ ‎ideal is flat and which will be called $PFF$-rings‎. ‎In particular‎, ‎Von Neumann regular rings‎, ‎hereditary rings‎, ‎semi-hereditary ring‎, ‎PID and arithmetical rings are examples of $PFF$-rings‎. ‎In the context domain‎, ‎this notion coincide with‎ ‎Pr"{u}fer domain‎. ‎We provide necessary and sufficient conditions for‎...

Atypical dementia: when it is not Alzheimer's disease.

Dementia represents the most common neurodegenerative disorders affecting approximately 5% of the elderly population over age 65 years. At present, different forms of dementia are distinguished, including Alzheimer's disease (AD), dementia with Lewy bodies, frontotemporal dementia, and dementia secondary to diseases, such as AIDS dementia. Unlike AD, these atypical dementias are often associate...

Is acute appendicitis still misdiagnosed?

OBJECTIVE The optimal diagnostics and treatment of acute appendicitis continues to be a challenge. A false positive diagnosis of appendicitis may lead to an unnecessary operation, which has been appropriately termed negative appendectomy. The aim of our study was to identify the effectiveness of preoperative investigations in preventing negative appendectomy. METHODS A retrospective study was...

Is hip originated pain misdiagnosed?

when appropriate statistical analysis is dismissed