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Nandini Sen on X: "Beware of the double ring sign- this is a button battery #PEM15 http://t.co/cMVsNhZDVw" / X
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Anterior-posterior X-rays. (A) On top, a button battery with double... | Download Scientific Diagram
The differential diagnosis of an optic nerve disorder: when you suspect an optic nerve disorder, your differential diagnosis should include retinal, glaucomatous and congenital conditions - Document - Gale Academic OneFile
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Salim R. Rezaie, MD on X: "1st sign of IUP is yolk sac w/I gestational sac (DOUBLE RING SIGN) #FOAMed #Meded http://t.co/XfzMwfPl2P" / X
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