Add a few squirts of mild dish soap. Scrub the patio with a long-handled scrub brush and the soapy water. Rinse the soap off with water from the garden hose. Cover plants, grass and landscaping around the concrete slab with plastic sheeting if it is still dirty or stained.
When pseudarthrosis is caused by or results in a positive sagittal-plane deformity, correction is essential. This can be accomplished by lengthening the anterior column, shortening the posterior column, or both. The anterior column can be extended by adding a structural interbody graft to the area of concern (Fig.
1 Tumors. 2  Tumors in the thorax may erode a blood vessel or rupture and cause an acute bleed. 3  Tumors located on the pleural surface of the chest, blood vessels within the chest, lungs or heart may all cause a hemothorax. 4  The most common tumor to cause a bleed is hemangiosarcoma (a malignant tumor of blood vessels).