Midterm symptoms of small cell carcinoma?

summary

Renal cell carcinoma, also known as renal cell carcinoma and renal adenocarcinoma, needs active treatment. Medical classification includes clear cell renal cell carcinoma, granular cell renal cell carcinoma, mixed cell renal cell carcinoma and undifferentiated cell renal cell carcinoma. 70% - 80% of renal cell carcinoma is clear cell carcinoma. As a more complex disease, is the final symptom of clear cell renal cell carcinoma? How can it be? Let's talk about it.

Midterm symptoms of small cell carcinoma?

First, the early symptoms are hematuria, low back pain, upper abdomen or waist mass, and other cancer diseases of kidney; In terms of age, clear cell renal cell carcinoma usually occurs in 50-70 years old. It is rare in children under 20 years old. The ratio of male to female is 2:1, and the incidence rate of clear cell renal cell carcinoma is 70% - 80% of adult renal malignant swelling.

Second: renal cell carcinoma comes from renal tubular epithelium, with a layer of fibrous capsule on the surface, which can grow in any part of the renal parenchyma. The main cells of renal cell carcinoma are clear cells or a mixture of clear cells and granular cells. The clear cell's cerebrospinal fluid is transparent, rich in lipid and glycogen. It is golden yellow and shiny. Its cancer cells are often arranged in flake, cord, acinar or tubular shape, much like renal tubules. Granular cells are also called dark cells. The cytoplasm is full of small particles. Its malignant degree is higher than that of clear cells. In addition, there is undifferentiated carcinoma with high malignant degree.

Third: renal cell carcinoma can gradually infiltrate into the perirenal fat and adjacent tissues and organs, and can also metastasize outward through lymphatic vessels or veins. Hematuria often occurs after invading into the renal pelvis. A few patients had distant metastasis when the primary tumor was very small or had not been found. The common metastatic sites are lung, lymph node, liver and bone.

matters needing attention

① Stage I tumors were confined to the renal capsule; ② In the second stage, it had invaded the perirenal fat and was still confined to the perirenal fascia; ③ Stage III tumor had metastasized to regional lymph nodes, renal vein and inferior vena cava had been or had not been invaded (tumor thrombus); ④ Stage IV tumor has invaded adjacent organs (except adrenal gland) or has distant metastasis.