Letterer-Siwe disease, multiple organ involvement. A lesion that affects bone, lung and skin; while histologically indistinct, it is more aggressive than the other forms. Prognosis. Poor if < 18 months at time of diagnosis; haemorrhagic skin lesions; hepatomegaly, anemia; thrombocytopenia; bone marrow involvement.
Cyclical Factors that Affect Business. Any business goes through different business cycles during the course of its existence. These cyclical stages include the ups and downs that a business experiences in terms of its sales volumes, revenues and product lines.
The business cycle is characterised by four main phases: 1  Boom: high levels of consumer spending, business confidence, profits and investment. 2  Recession: falling levels of consumer spending and confidence mean lower profits for businesses â which start to cut back on investment.