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Last revised 11 February 2013

We try to minimize the use of abbreviations. However, our website chapters do frequently use the following:

+ means positive as in keratin+ or "more" as in ages 70+

- means negative as in keratin-

CNS: central nervous system

DD: differential diagnosis (i.e. what other diseases may appear similar)

EM: electron microscopy

ER: estrogen receptor

F: female

Gross: macroscopic features (i.e. those visible with the naked eye)

HPF: high power microscopic field

M: male

MF: mitotic figures

MFH: malignant fibrous histiocytoma

Micro: microscopic features

PgR or PR: progesterone receptor

RR: relative risk

TB: tuberculosis

End of Abbreviations