**Core Concept**
Hypernephroma, also known as renal cell carcinoma (RCC), is a type of kidney cancer originating from the renal epithelium. It is a malignant tumor that arises from the proximal convoluted tubules of the kidney.

**Why the Correct Answer is Right**
Hypernephroma typically presents with non-specific symptoms such as hematuria (blood in the urine), flank pain, and a palpable abdominal mass. The tumor can also cause anemia, hypertension, and weight loss due to the production of erythropoietin, renin, and other factors. Hypernephroma often metastasizes to the lungs, bones, and brain, leading to a poor prognosis.

**Why Each Wrong Option is Incorrect**
**Option A:** Not a feature of hypernephroma - Hypernephroma typically does not present with a palpable lymphadenopathy, which is more characteristic of lymphoma or other lymphatic malignancies.

**Option B:** Feature of hypernephroma - Hypernephroma can indeed cause hypertension due to the production of renin by the tumor cells.

**Option C:** Feature of hypernephroma - Hypernephroma is known to produce erythropoietin, leading to anemia in some patients.

**Option D:** Feature of hypernephroma - Hypernephroma can cause a palpable abdominal mass due to the size and location of the tumor.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that hypernephroma can mimic other abdominal masses, such as ovarian tumors or pancreatic cancer, making a precise diagnosis challenging without imaging studies.

**Correct Answer:** A.