Long-term hemodialysis treatment of chronic kidney disease (CKD) can lead to disorder of calcium and phosphorus regulation and abnormal parathyroid function. Most patients with renal failure often have secondary hyperparathyroidism, at which time the parathyroid glands can release large amounts of parathyroid hormone (PTH), which activate osteoclast activity to increase serum calcium levels, resulting in severe skeletal diseases, including osteoporosis, pathological fractures, bone pain....

Skin cancer is the most common form of cancer in the United States of America and in Australia. Basal cell carcinoma (BCC), the most prominent skin cancer, is curable, but can be disfiguring and costly to treat....

Colorectal cancer is very rare in children. Therefore, the diagnosis is generally established at advanced disease. This is a presentation of two cases of colorectal treated at Habib Bourguiba Hospital University....