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| Molecular = | | Molecular = | ||
| IF = | | IF = | ||
| Gross = may be multifocal, must be >1.5 cm ( | | Gross = may be multifocal, must be >1.5 cm (if low ISUP grade), often necrotic-appearing (brown, soft, friable) | ||
| Grossing = [[total nephrectomy for tumour grossing]], [[partial nephrectomy grossing]] | | Grossing = [[total nephrectomy for tumour grossing]], [[partial nephrectomy grossing]] | ||
| Staging = [[kidney cancer staging]] | | Staging = [[kidney cancer staging]] | ||
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==Gross== | ==Gross== | ||
*Renal cortical mass > 1.5 cm. | *Renal cortical mass usually >1.5 cm. | ||
*May be multifocal. ‡ | *May be multifocal. ‡ | ||
*Often necrotic appearing - light-to-dark brown, soft/mushy, friable. | *Often necrotic appearing - light-to-dark brown, soft/mushy, friable. | ||
Note: | Note: | ||
*‡ Approximately 10% of PaRCCs are multifocal (based on a set of 5378 patients);<ref name=pmid22502873>{{Cite journal | last1 = Siracusano | first1 = S. | last2 = Novara | first2 = G. | last3 = Antonelli | first3 = A. | last4 = Artibani | first4 = W. | last5 = Bertini | first5 = R. | last6 = Carini | first6 = M. | last7 = Carmignani | first7 = G. | last8 = Ciciliato | first8 = S. | last9 = Cunico | first9 = SC. | title = Prognostic role of tumour multifocality in renal cell carcinoma. | journal = BJU Int | volume = 110 | issue = 11 Pt B | pages = E443-8 | month = Dec | year = 2012 | doi = 10.1111/j.1464-410X.2012.11121.x | PMID = 22502873 }}</ref> it is the renal tumour that is most commonly multifocal. | *‡ Approximately 10% of PaRCCs are multifocal (based on a set of 5378 patients);<ref name=pmid22502873>{{Cite journal | last1 = Siracusano | first1 = S. | last2 = Novara | first2 = G. | last3 = Antonelli | first3 = A. | last4 = Artibani | first4 = W. | last5 = Bertini | first5 = R. | last6 = Carini | first6 = M. | last7 = Carmignani | first7 = G. | last8 = Ciciliato | first8 = S. | last9 = Cunico | first9 = SC. | title = Prognostic role of tumour multifocality in renal cell carcinoma. | journal = BJU Int | volume = 110 | issue = 11 Pt B | pages = E443-8 | month = Dec | year = 2012 | doi = 10.1111/j.1464-410X.2012.11121.x | PMID = 22502873 }}</ref> it is the renal tumour that is most commonly multifocal. | ||
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Size criterion: | Size criterion: | ||
*Papillary lesions with low [[ISUP grade]] '''''must''''' be >1.5 cm to be called ''carcinoma''; smaller lesions (<=1.5 cm) with low ISUP grade are called ''[[renal papillary adenoma|papillary adenoma]]s''.<ref name= | *Papillary lesions with low [[ISUP nucleolar grade|ISUP grade]] '''''must''''' be >1.5 cm to be called ''carcinoma''; smaller lesions (<=1.5 cm) with low ISUP grade are called ''[[renal papillary adenoma|papillary adenoma]]s''.<ref name=pmid26935559>{{Cite journal | last1 = Moch | first1 = H. | last2 = Cubilla | first2 = AL. | last3 = Humphrey | first3 = PA. | last4 = Reuter | first4 = VE. | last5 = Ulbright | first5 = TM. | title = The 2016 WHO Classification of Tumours of the Urinary System and Male Genital Organs-Part A: Renal, Penile, and Testicular Tumours. | journal = Eur Urol | volume = | issue = | pages = | month = Feb | year = 2016 | doi = 10.1016/j.eururo.2016.02.029 | PMID = 26935559 }}</ref><ref name=Ref_GUP288>{{Ref GUP|288}}</ref> † | ||
Mnemonic ''HIP'': '''h'''ighly vascular, '''i'''nterstitial foam cells, '''p'''apillae. | Mnemonic ''HIP'': '''h'''ighly vascular, '''i'''nterstitial foam cells, '''p'''apillae. | ||
Note: | |||
*† The size cut in the 2004 [[WHO]] GU (blue) book was 0.5 cm.<ref name=pmid26935559/><ref>{{Ref WHOGU|28}}</ref> | |||
DDx: | DDx: |
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