**Core Concept**
Renal Vein Thrombosis (RVT) is a blood clot that forms in the veins that drain blood from the kidneys. It can be caused by various factors including hypercoagulable states, dehydration, and conditions that increase the pressure within the renal veins.

**Why the Correct Answer is Right**
Post-streptococcal Glomerulonephritis (PSGN) is an immune-mediated condition characterized by the deposition of immune complexes in the glomeruli, leading to inflammation and damage. Unlike other conditions listed, PSGN is not typically associated with increased coagulability or venous hypertension, making it less likely to cause RVT.

**Why Each Wrong Option is Incorrect**
**Option A:** Membranous Nephropathy is a condition characterized by the thickening of the glomerular basement membrane, which can lead to increased pressure within the renal veins, making it a potential cause of RVT.

**Option B:** Membranoproliferative glomerulonephritis is a condition characterized by the proliferation of mesangial cells and the deposition of immune complexes, which can lead to increased coagulability and RVT.

**Option C:** Lupus Nephritis is an immune-mediated condition characterized by the deposition of autoantibodies in the glomeruli, which can lead to increased coagulability and RVT.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that RVT can be a complication of conditions that increase coagulability or venous hypertension, such as nephrotic syndrome, dehydration, and malignancies.

**Correct Answer:**
✓ Correct Answer: D. Post streptococcal Glomerulonephritis (PSGN)