Skin & soft tissues

Diseases affecting the skin
Make it thickened or even quite thin
Can change pigmentation
Or vascularization
May alter the glands found within.

All types of infection abound
Cause lesions that often are round
Like chancres luetic
Which are not aesthetic
Where spirochetes plenty are found.

Most frequent of all dermatoses
Bacterial furunculoses
Are usually tame
But can spread to the brain
By retrograde venous thromboses.

Allergic exanthems express
Problems immune unrepressed
From cosmetics and drugs
The bites of some bugs
As well as reactions to stress.

The skin has an enormous range
Of diseases whose nature is strange
Pemphigus and psoriasis
Lichen planus pityriasis
Erupt swell itch redden desquame.

The skin is the most frequent site
Of cancer in those who are white
The rays of the sun
Are the cause number one
Too much ultraviolet's the blight.

Most skin cancers are really low grade
Despite they the dermis invade
But dark melanomas
Surpass carcinomas
Spread widely so lives must be paid.

Soft tissues are found under skin
A flexible cushion within
A source of lipomas
Myomas fibromas
It's there that sarcomas begin.

Predilections are shown for locations
Where tumors begin their formations
In orbit and ear
In bladder or near
Most childhood sarcomas are stationed.