Fat, Muscle, Cartilage, Bone Flashcards by Tim Michaelis

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Mobile Encapsulated Lipoma

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Hibernoma

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Angiomyolipoma

(some consider this an angioleiomyoma with mature fat admixed)

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Nevus lipomatosis

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Osteoma cutis

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Accessory tragus

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Subungual Exostosis

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Chondroma

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Pilar leiomyoma

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Angioleiomyoma

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Leiomyosarcoma

High cellularity
Mitoses and nuclear atypia
desmin+

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Atypical lipomatous tumor

(aka Well Diff Liposarcoma)

Lipocytes vary in size
Atypia noted near septae
Positive for MDM2 and CDK4 by IHC or FISH

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Pleomorphic liposarcoma

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Pleomorphic lipoma

MN floret cells
Ropey collagen
Mature lipocytes help to differentiate from liposarcoma

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Smooth muscle hamartoma

(essentially the same as a beckers nevus)

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Spindle cell lipoma

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Fibrolipoma

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Angiolipoma

-Microthrombi in capillaries