Organs and cancer behavour

Cancer has two main energies behind, which are polar:

--- main energy of Cold for roots and structures

--- energy of Burn within main energy of Cold for spreading

  

In 8 Qi classification each organ and body region is controlled by a specific energy.

Yang energies group: Wind--->Heat--->Burn, in order of growing Yang

--- Burn : nerv. system, brain and spinal cord/ head, face, eyes

--- Heat: cardiovascular system/neck, thyroid, vocal cords.

subsystems of interest are:

pancreas and duodenum - Burn in Heat 

immune system - Darkness in Heat 

--- Wind: liver+gall bladder/thoracic region/muscles

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Yin energies group: Dampness--->Dryness--->Cold--->Darkness, in order of growing Yin

--- Dampness: spleen+stomach, lymphatic system,endocrine system/ upper part of abdomen

--- Dryness: lungs+colon, skin, hair/lower part of abdomen

--- Cold: kidneys+bladder, bones/lowest part of abdomen and perineum

--- Darkness: reproductive system.

Yang energy features: functional aspects of cancer, spreading, developing fast, aggressiveness, expanding etc.

Yin energy features: structural aspects, hidden behavour, latent development, rooting, being slow and steady etc.

This may shed light on cancer's behavour depending on the organ or system it develops in:

--- brain, face, eye cancers are usually aggressive, fast-developing - reflecting Yang nature of these organs,

which resonates with Yang side of cancer - spreading.

--- cervical cancer is well-known for it's masked development- which reflects ultimate Yin energy behind reproductive system, Darkness.

Colon and lungs cancer, skin cancer are also known to initially grow without much manifestation and quite often are discovered because of complaints not linked to cancer.

Regarding structural/functional aspects:
--- brain (Yang organ) cancer usually develops very aggressively (Yang) but forms less dense network, 
quite often just 2-3 tiny tumours (Yin)
--- while colon (Yin organ) cancer is known to develop for years and form metastases over a large area (including liver, lungs, pelvis bones etc).