Staging of colorectal cancer

TNM classification of colorectal cancer

T Primary tumor
Tx Primary tumor cannot be assessed
T0 No evidence of primary tumor
Tis Carcinoma in situ: invasion up to lamina propria mucosae
T1 Tumor invades submucosa

Lichtman's radiographic classification of aseptic necrosis of lunate bone Kienbock's disease

Kienbock's disease is an eponym for avascular necrosis of the lunate bone. It usually affects man working manually with tools like pneumatic hammer that cause repetitive trauma.

Stage Description
Stage I normal x-ray
Stage II sclerosis of lunate with possible decrease of lunate height on radial side only
Stage IIIa lunate collapse, no scaphoid rotation
Stage IIIb
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