Seminal vesicle malignant tumor
Introduction
Introduction to seminal vesicle malignancies Seminal vesicle malignant tumor is rare. Because bladder cancer in situ, prostate cancer, rectal cancer and lymphoma are easy to invade and seminal vesicles, it is difficult to identify whether the tumor originated in the seminal vesicle. Histologically, the primary seminal vesicle malignant tumors are adenocarcinoma and sarcoma. basic knowledge The proportion of the disease: the incidence of the disease in certain age groups is 0.5%, more than 50 cases Susceptible people: male Mode of infection: non-infectious Complications: urinary retention
Cause
The cause of seminal vesicle malignancy
Causes:
There is currently no relevant information.
Pathogenesis
There is no complete capsule in seminal vesicle cancer, mainly invading the prostate and bladder, but it rarely affects the rectum. The local lymph node metastasis is the main, and distant metastasis can occur in the late stage. The bone metastasis is mostly osteolytic.
Prevention
Seminal vesicle malignancy prevention
There is no effective preventive measure for this disease. Early detection and early diagnosis are the key to the prevention and treatment of this disease.
Complication
Seminal vesicle malignant tumor complications Complications, urinary retention
Generally no complications.
Symptom
Symptoms of seminal vesicle malignant tumors Common symptoms In the urinary urinary tract, there is a thick gelatinous cyst, intermittent hematuria, urinary dysuria, and urinary retention.
Clinical symptoms
Blood sperm, intermittent hematuria, frequent urination, thick gelatinous substance in the urine, urinary dysfunction when the tumor is large, and even urinary retention, late in the urgency and secondary epididymitis, blood in the stool suggests that the tumor has invaded the rectum .
2. Digital rectal examination
Irregular spindle-shaped lumps can be reached above the prostate, which are cystic or solid, sometimes fused with the prostate and the boundary is unclear.
The criteria for the diagnosis of seminal vesicle tumors are:
1 the tumor must be confined to the seminal vesicle;
2 no other parts of the primary tumor;
3 pathologically a papillary adenoma, if it is an undifferentiated adenoma, mucus should be formed.
Examine
Examination of seminal vesicle malignancies
Tumor markers: prostatic specific antigen (PSA), prostatic acid phosphatase (PAP) and carcinoembryonic antigen CEA negative, cancer antigen 125 (Carbohytrate antigen 125, CA-125) increased Seminal vesicle cancer.
Cystoscopy
It can be seen that the triangular area is deformed and displaced by pressure.
2. Imaging examination
B-ultrasound, CT can identify the location of the tumor and its relationship with the surrounding tissue; seminal vesicle angiography can show filling defects, obstruction, deformation, etc. in the seminal vesicle; IVU helps to determine whether the ureter is involved; if necessary, in the transrectal B-ultrasound ( Transrectal ultrasound, TRUS) guided a rectal biopsy to confirm the pathological nature, bone metastases were osteolytic changes.
3. Pathological examination
For papillary adenocarcinoma, mucus production is still present in undifferentiated carcinoma.
Diagnosis
Diagnosis and diagnosis of seminal vesicle malignant tumor
Prostate cancer
Digital rectal examination (DRE) shows that the prostate is hard as a stone or the prostate has an induration, blood PSA is elevated, prostate biopsy can help diagnosis, and immunohistochemistry shows PSA positive.
2. Colon, rectal cancer
There are changes in bowel habits and bloody stools, elevated blood CEA, colonic colonoscopy can be seen in the intestinal mass, colonoscopy biopsy, pathological examination can confirm the diagnosis.
