Case 1
Malignant Nerve Sheath tumor (Von Recklinghausen's disease) X-file: schannoma Special stains: Vimentin: + Leu 7, S-100: -

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Case 2
Stromal tumor X-file: schwannoma Special stains: S-100, actin HHF-35: negative desmin: focally reactivity in one area

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Case 3
Duct carcinoma X-file: comedocarcinoma

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Case 4
Verrucous carcinoma X-file: well differentiated squamous cell carcinoma

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Case 5
Mucinous ethmoid hamartoma

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Case 6
Kaposi's sarcoma

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Case 7
Myelolipoma

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Case 8
Paraganglioma (Carotid body tumor) Special stains: Chromogranin: multifocal strong positivity NSE: weakly focal positivity

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Case 9
Infantile hemangioendothelioma

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Case 10
Sarcomatoid carcinoma X-file: metaplastic carcinoma

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Case 11
Multiple myeloms X-file: plasmocitoma Special stains: kappa: positive lambda: positive

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Case 12
Myxoid liposarcoma

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