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Pyogenic abscess in the right temporal region of a 27-year-old woman. A, Axial T2WI shows a well-defined hyperintense lesion with a hypointense wall and perifocal edema. B and C, The lesion appears hypointense on the T1WI (B) with an isointense wall showing ring enhancement on the postcontrast T1WI (C). D, In vivo 1H-MR spectroscopy by using SE sequence (TR/TE/NEX= 3000 ms/144 ms/128) from the center of the lesion shows only a Lip peak, 1.3 ppm. Culture from pus grew S aureus.
