1naresh2naresh<pre>Array
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

    [178531ac-bafb-42f4-8790-0350e71d462a] => Array
        (
            [runtime-id] => 178531ac-bafb-42f4-8790-0350e71d462a
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [b47ffaba-cadd-4cfc-8ccc-ee8992bcdffa] => Array
                        (
                            [runtime-id] => b47ffaba-cadd-4cfc-8ccc-ee8992bcdffa
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;7d92f321f467a6d775cf82bb32a0b03a2059e763
                )

        )

)
1naresh2naresh<pre>Array
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => FreeToRead
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

    [5b43ebf7-5802-444c-ad70-e3ee1c399399] => Array
        (
            [runtime-id] => 5b43ebf7-5802-444c-ad70-e3ee1c399399
            [type] => toll-free-key
            [service-id] => ajnr-ac.highwire.org
            [access-type] => FreeToRead
            [privilege] => Array
                (
                    [03af1ac1-f358-463d-85cc-862e16e20b3e] => Array
                        (
                            [runtime-id] => 03af1ac1-f358-463d-85cc-862e16e20b3e
                            [type] => toll-free-key
                        )

                )

            [credentials] => Array
                (
                    [method] => toll-free-key
                    [value] => tf_ipsecsha;7d92f321f467a6d775cf82bb32a0b03a2059e763
                )

        )

)
RT Journal Article
SR Electronic
T1 MR Imaging of Pial Melanosis Secondary to a Posterior Fossa Melanotic Ependymoma
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 804
OP 808
VO 26
IS 4
A1 Albayram, Sait
A1 Urger, Efsun
A1 Oz, Buge
A1 Kafadar, Ali
A1 Islak, Civan
A1 Kocer, Naci
YR 2005
UL http://www.ajnr.org/content/26/4/804.abstract
AB Summary: A 36-year-old man presented with trouble speaking and bilateral progressive hearing loss. MR imaging and histopathologic results revealed a posterior fossa melanotic ependymoma. Pial surfaces appeared hyperintense on T1-weighted images and hypointense on T2-weighted images. Histopathologic examination revealed that tumor cells and interstitial spaces had abundant melanin accumulation. There was no evidence of hemosiderin in tumor cells and in interstitial spaces. Pial melanin accumulation secondary to a posterior fossa melanotic ependymoma explained our MR findings.