A lot of speculations abound as to the nature and severity of the ailment that torments our dear president. Very few clues are available. Besides the Manhattan nuclear project of world war 2, this would seem to be the most tightly held secret in history.
His doctors in Nigeria once revealed he had menniere's disease; an ear disorder associated with vertigo, disorientation and partial deafness.
At some point, unnamed sources approached a popular online news blog with information he had prostate cancer.
President Buhari's admission to blood transfusion while on medical tourism showed he had developed anaemia, the cause of which is still unknown. Probably cancer
In Kaduna, spiral bound fliers were distributed freely, contents of which alluded that the president had been poisoned via the aso rock ventilating system. This has immence potentials for catastrophy.
Today however, pictures emanating from an albeit harmless visit to the president in his comfortable home revealed another sign that could potent grave organ dysfunction. BABA HAS SIGNIFICANT PEDAL OEDEMA (LEG SWELLING, UP TO THE ANKLES AT LEAST)
What are the causes of leg swelling? Let's review a few.

1. Anaemia (blood shortage): Could it be that Buhari is still anaemia, even after 2 pints of blood? What is the cause of this anaemia? Cancer is known to be associated with a triad of signs and symptoms : anaemia, anorexia and ashenia. In simple words, blood shortage, lack of appetite and weight loss. In the setting of cancer, this could be recurrent.
2. Congestive cardiac failure: This would not be out of place, considering his age. Other common symptoms could include easy fatiguability, breathlessness on moderate exertion ; could be the reason he wants to work quietly from home.
3. Kidney failure: Again considering his age, this is likely. It might require repeated sessions of dialysis/ visits to your specialist.
4. Liver failure

5. Others such as low blood protein level, prolonged immobilization, e.t.c

I think president Buhari has prostate cancer. What's your take?