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Invasive breast carcinoma - IARC

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ICD-O codes<br />

Adenosquamous <strong>carcinoma</strong> 8560/3<br />

Adenoid cystic <strong>carcinoma</strong> 8200/3<br />

Adenoid basal <strong>carcinoma</strong> 8098/3<br />

Carcinoid 8240/3<br />

Small cell <strong>carcinoma</strong> 8041/3<br />

Undifferentiated <strong>carcinoma</strong> 8020/3<br />

Adenosquamous <strong>carcinoma</strong><br />

A <strong>carcinoma</strong> composed of a mixture of<br />

malignant glandular and squamous<br />

epithelial elements {2360}.<br />

Adenoid cystic <strong>carcinoma</strong><br />

An adeno<strong>carcinoma</strong> which re s e m b l e s<br />

adenoid cystic <strong>carcinoma</strong> of salivary<br />

gland origin but usually lacks the myoepithelial<br />

cell component of the latter<br />

{2781}.<br />

Adenoid basal <strong>carcinoma</strong><br />

A <strong>carcinoma</strong> with rounded, generally well<br />

d i ff e rentiated nests of basaloid cells<br />

showing focal gland formation; central<br />

squamous differentiation may be present<br />

as well {1906,1986}.<br />

Carcinoid<br />

A tumour resembling carcinoids of the<br />

gastrointestinal tract and lung {936}.<br />

Small cell <strong>carcinoma</strong><br />

A <strong>carcinoma</strong> of neuroendocrine type that<br />

resembles small cell <strong>carcinoma</strong>s of the<br />

lung {1371,1869,1877,2281}.<br />

Undifferentiated <strong>carcinoma</strong><br />

A <strong>carcinoma</strong> that is not of the small cell<br />

type and lacks evidence of glandular,<br />

squamous, neuroendocrine or other<br />

types of differentiation.<br />

Epithelial tumours 301

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