The immunohistochemical assessment of occult regional lymph node metastases in patients with T3pN0M0 prostate cancer before definitive radiotherapy

被引:14
作者
Clobes, H
Fosså, SD
Wæhre, H
Jocham, D
Berner, A
机构
[1] Norwegian Radium Hosp, Dept Pathol, Oslo, Norway
[2] Norwegian Radium Hosp, Dept Oncol, Oslo, Norway
[3] Norwegian Radium Hosp, Dept Surg, Oslo, Norway
[4] Univ Lubeck, Dept Urol, D-2400 Lubeck, Germany
关键词
lymph nodes; prostate cancer; lymphatic metastases; immunohistochemistry; radiotherapy;
D O I
10.1046/j.1464-410x.2000.00406.x
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Objective To detect occult regional lymph node metastases in patients with T3pN0M0 prostate cancer not recognized by routine haematoxylin and eosin staining, and to evaluate the clinical relevance of this finding. Patients and methods Formalin-fixed and paraffin-embedded pelvic lymph nodes (1118) from 92 patients were evaluated by immunohistochemistry using antibodies for prostate specific antigen (PSA) and pancytokeratin (AE1/AE3). Of the tumours, 14% were well, 69% moderately and 17% poorly differentiated. The extent of tumour was categorized as T3pN0M0 in all patients, who were referred for definitive radiotherapy after pelvic staging lymphadenectomy. The median (range) serum PSA value before treatment was 18.5 (0.4-342) mu g/L. After radiotherapy, the patients were followed by assessing biochemical progression, pelvic recurrence and/or development of distant metastases. The median (range) observation time for all patients was 61 (16-136) months, Results Occult lymph node metastases were detected in four (4.4%) of the 92 patients, Patients with or without occult metastases had similar serum PSA levels and histological grades, None of the four patients with occult metastases progressed, compared with 37 of the 88 (42%) with no such metastases. Conclusion Using immunohistochemistry the detection rate of occult lymph node metastases in patients with T3pN0M0 prostate cancer is low, The occurrence of such metastases is probably unrelated to the serum PSA value before treatment, The short-term outcome of patients subsequently treated with definitive radiotherapy does not seem to be associated with the finding of occult lymph node metastases, but longterm follow-up is needed, So far, the results do not justify the search for occult lymph node metastases as a routine procedure in these patients.
引用
收藏
页码:270 / 275
页数:6
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