Recurrent hematuria in a deaf mute is seen in –
Recurrent hematuria and deafness—what conditions are associated with both? I remember that Alport syndrome is a genetic disorder that causes kidney disease, hearing loss, and eye abnormalities. It's an X-linked condition, but there are autosomal forms too. The hematuria in Alport is due to basement membrane defects, leading to glomerulonephritis. That fits the scenario here.
Now, the other options could be other conditions that cause hematuria but not deafness. Let's think. IgA nephropathy causes hematuria but no hearing loss. Goodpasture's syndrome has hematuria and lung issues, but it's an autoimmune condition. Nephrotic syndrome is more about proteinuria than hematuria. Maybe something like sickle cell disease, but that's more about vaso-occlusive crises and anemia.
Wait, there's another possibility: Von Willebrand disease? No, that's a bleeding disorder, not typically associated with hematuria or deafness. Then there's systemic lupus erythematosus (SLE), which can have renal involvement, but lupus nephritis might cause hematuria, but SLE isn't linked to deafness unless there's some ototoxic medication involved, which isn't mentioned here.
So Alport syndrome is the most likely answer. The user needs to know that Alport's is characterized by hematuria, progressive kidney disease, sensorineural hearing loss, and sometimes ocular abnormalities. It's caused by mutations in type IV collagen genes, leading to defective basement membranes in the kidneys, ears, and eyes. The recurrent hematuria and deafness point towards this diagnosis.
For the incorrect options, if they were listed, each would have to be explained. For example, if an option was IgA nephropathy, it's incorrect because it doesn't cause deafness. Similarly, other renal diseases without the hearing loss component would be ruled out. The key here is the combination of hematuria and sensorineural hearing loss, which is classic for Alport.
I should also mention the clinical pearl that Alport syndrome is a key consideration in patients with hematuria and hearing loss, especially if there's a family history. Early diagnosis is crucial to monitor kidney function and manage complications.
**Core Concept**
This question tests the association between recurrent hematuria and sensorineural hearing loss in a genetic disorder. **Alport syndrome** is a key X-linked condition caused by mutations in the *COL4A5* gene, leading to defective basement membranes in the kidneys, ears, and eyes.
**Why the Correct Answer is Right**
Alport syndrome presents with **recurrent microscopic hematuria**, progressive proteinuria, and **sensorineural hearing loss**. The defective type IV collagen disrupts the glomerular basement membrane (GBM), causing glomerulonephritis. Hearing loss arises from damage to the cochlear basement membrane. Deafness and hematuria are hallmark features, making this the most likely diagnosis.
**Why Each Wrong Option is Incorrect**
**Option A:**