Results: Schwannomas arose from the acoustic nerve(n = 18) , the trigemin a l nerve(n = 2) , the glossopharyngeal -vagal-accessory nerve complex (n=2) , and the olfactory nerve(n=1l. Intracranial schwannomas were well defined , lobulaled and inhomogeneously or homogeneously enhancing masses on CT and MR , and were located along the course of the specific cranial nerve. Acouslic schwannomas involved both the internal auditory canal(IAC) and the cerebellopontine angle(CPA) in 14 cases , the IAC in three , and the CPA in two. Two trigeminal schwannomas involved both middle and posterior cranial fossa and were in the shape of a dumbbell One of the two schwannomas that invelved lower cranial nerve complex(9 -11 th) was located in the medullary cistern and jugular foramen ; the other was located in the central posterior cranial fossa. A case of olfactory schwannoma was localed in lhe right cribriform plate. The precontrast CT scan showed low density in 13 cases (62 % ), isodensily in seven(33%) and high density in one(5%). On postcontrast CT scan , enhancement was seen in 20 cases(95 % ). Of lhe 15 cases with MR , 12 had low signal intensity on T1 weighted image and 14 had high signal intensity on T2 weighted image. MR imaging after Gd-DTPA infusion showed enhancement in 14 cases Enhancement was inhomogeneous in 14 cases on CT and in 13 on MR. Of 24 cases , intratumoral necrosis was seen in 19, ring enhancement in five and severe cystic change in one. Other findings were intratumoral calcification(21 %) , hemorrhage(8%) , pressure bony erosion(70.8 % ), midline shift(58 % ), peritumoral edema(29 % ) and hydrocephalus(33%). On MR , there was in all 15 cases a peritumoral low signal intensity rim on T1-and T2-weighted images and on a T1 weighted image following gadolium infusion.
We analyzed 105 case reports published in the Joumal of the Korean Radiological Society between 1975 and 1985. The objectives of this study were to find out(l) whether those case reports were truly original or not as far as domestic p벼ications were concemed and (2) whether their citations of domestic literatures were correct.In two papers, we found pre띠ous reports published already in the domestic joumal in spite of the authors' cJaim as their "first case reports ". In 105 case reports, only 94 references were cited while 151 omitted.It is concJuded that a case report must incJude a statement to authentically cJa디fy whether similar report had been previously published through meticulous review of published literatures. We also recommend to computerize the index of domestic literatures.
Aspergillosis is a rare disease of fungal infection produced by the genus Aspergillus in immunocompromised patients. It mainly involves the lung and may disseminate by invasion ofblood vessels into the gastrointestinal tract, brain and kidney.We report a case of the disseminated aspergillosis in malignant lymphoma affecting the lung. brain and thyroid gland.
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