A clinicopathological analysis on microinvasive carcinoma / 한국유방암학회지

PURPOSE: Histopathological classification of invasive breast carcinoma with its earliest phases is fraught with pitfalls. We were willing to clarify the biology and clinicopathological features of microinvasive carcinoma which is not fully understood in comparison with those of in situ cancer. Particular attention is paid to identifying the novel markers which can be representative of the microinvasive carcinoma. METHODS: From January 1986 to December 1996, a total of 72 microinvasive carcinomas, defined as in situ carcinomas with invasion present in less than 10% of the histological section, were found out. Their paraffin blocks were chosen for immunohistochemical staining against four molecules. RESULTS: Microinvasive carcinoma was greater in primary tumor size (2.66?0.17cm vs 2.21?0.19cm, P=0.045) and metastatic axillary nodes (0.21?0.25 vs 0.06?0.16, P=0.019) than DCIS. In terms of nuclear grade(P=0.198) and comedo type(P=0.562), there was no statistical significance between microinvasive carcinoma and DCIS. Among three primary tumor features(size, comedo component, and nuclear grade), the tumor size> or =2.5cm had marginal significance affecting the incidence of axillary node metastasis in microinvasive carcinoma(P=0.081). Of investigational prognostic factors, determined by immunohistochemical staining, p53 expression was observed more frequently in microinvasive disease entity from in situ to invasive from than DCIS(P=0.031). CONCLUSION: Microinvasive carcinoma is thought to be transitional disease entity from in situ to invasive form. The microinvasive carcinoma of 2.5cm could be indication for axillary node dissection. In addition, p53 mutation might play a important biological role in progression from noninvasive to invasive form and these results provide further evidence that p53 mutation could have potential use as a molecular marker.

A Clinicopathological Analysis of Microinvasive Carcinoma

BACKGROUND: The histopathological classification of an invasive breast carcinoma in its earliest phases is fraught with pitfalls. We wanted to clarify the biology and the clinicopathological features of a microinvasive carcinoma, which are not fully understood, by comparing then with those of an in-situ cancer. Particular attention was paid to identifying the novel markers which might be representative of a microinvasive carcinoma. METHODS: From January 1986 to December 1996, a total of 72 microinvasive carcinomas, defined as in-situ carcinomas with invasion present in less than 10% of the histological section, were found. Their paraffin blocks were chosen for immunohistochemical staining against four molecules. RESULTS: Microinvasive carcinomas had a greater primary-tumor size (2.66+/-0.17 cm vs 2.21+/-0.19 cm, p=0.045) and a larger number of metastatic axillary nodes (0.21+/-0.25 vs 0.06+/-0.16, p=0.019) than DCIS (Ductal carcinoma in situ). In terms of nuclear grade (p=0.198) and comedo type (p=0.562), there were no statistical significances between microinvasive carcinomas and DCIS. Among three primary- tumor features (size, comedo component, and nuclear grade), a tumor size> or =2.5 cm had a marginal significance affecting the incidence of axillary-node metastasis in microinvasive carcinomas (p=0.081). Of the investigational prognostic factors determined by using immunohistochemical staining, p53 expression was observed more frequently in microinvasive tumors than in DCIS (p=0.031). CONCLUSION: A microinvasive carcinoma is thought to be transitional disease entity between the in-situ to the invasive forms. In spite of the marginal statistical significance of the result a microinvasive carcinoma larger than 2.5 cm could be an indication for axillary-node dissection. In addition, p53 mutation might play an important biological role in the progression from a noninvasive to an invasive form. Also the results provide further evidence that p53 mutation might have potential use as a molecular marker.

A Clinical and Pathological Observation of Microinvasive Carcinoma of Uterine Cervix / 대한부인종양콜포스코피학회잡지

Microinvasive carcinoma of the uterine cervix(Stage Ia) is the earliest stage of squamous carcinoma. The transition from preinvasive to invasive disease is a crucial juncture in the development of cervical cancer. The clinical experience that microinvasive lesions carry a better prognosis justifies a separate diagnostic category. To investigate the clinical and pathological aspects of microinvasive cervical carcinoma, a retrospective study was made on 84 cases, histologically reconfirmed surgical specimens, which had been treated during the period from January, 1985 to December, 1996 at Department of Obstetrics and Gynecology, Kyung-pook National University Hospital. We defined microinvasive carcinoma as stromal invasion not exceeding a depth of Smm from the base of the epithelium presented by FIGO in 1985. The results obtained were as follows; 1. Mean age of 84 patients was 46.9 year old, all were parous women but not 1 patients. 60 cases(71.4%) belonged to stage Ial and 24 cases(28,6%) to stage Ia2. 2. Chief complaints were postcoital spotting and leukorrhea. 3, The corresponding rate of Pap. smear to histologic diagnosis was approximately 29.8%. However correponding rate within one histologic grade was about 33,3%. 4. According to the colposcopic examination, 26.4% of cases revealed suspected abnormal findings suggesting invasive lesion. 5. As to the reports of punch biopsy, 55.1% of cases showed microinvasive and/or invasive lesion. With additional diagnostic conization of cervix, the preoperative diagnosis were correct in 72%. 6. Operation performed were simple hysterectomy, extrafascial hysterectomy or modified radical hysterectomy with both pelvic LN dissection, Simple hysterectomy was most commonly performed. 7. Post-treatment complications were developed in 73.9% of patients who were done with modified radical hysterectomy with both pelvic LN dissection and bladder dysfunction was developed in 50% of the patients.

The Diagnosis and Treatment in 46 Cases with Microinvasive Carcinoma of the Cervix Uteri / 대한부인종양콜포스코피학회잡지

OBJECTIVE: To review recurrence and prognosis of microivasive squamous cell carcinoma of the cervix that are associated with depth of invasion, pathologic finding and management(conservative or radical treatment) STUDY DESIGN: We conducted retrospective study in order to evaluate the results of therapeutic approaches in 46 patients with microinvasive cervical cancer from Jan 1987 to Oct 1996. RESULT: The mean age of patients was 44.6+ 8.86 years. Only one woman was nullipara, and the mean parity was 2.8, Overall diagnostic accuracy of pap smear and punch biopsy were 54.3% and 79.4%. As the depth of invasion was deeper, the diagnostic accuracy of punch biopsy increased(p<0.05), The confluence pattern and lymphovascular space involvement were observed in 39.1% and 4.9%. The confluence pattern was observed with statistical significant in advanced depth of stromal invasion. In the surgical management, vaginal hysterectomy was done in 28 patients, conization(l patient), total abdominal hysterectomy(8 patients) and radical hysterectomy with pelvic lymph node dissection(9 patients) was done, no positive node was in 104 pelvic lymph node dissected. Though all cone margin was free and all endocervical curettage was negative, residual lesion(2 patients) was present in the hysterectomy after conization, The median follow-up period was 64 months. There was no recurrence in all cases and 5 years survival rate was 100% CONCLUSION: We suggest that microinvasive carcinoma of the cervix may be the disease of good prognosis and no recurrence, and less radical therapy for the patients with microinvasive carcinoma may be sufficient.

A Comparson of Cytologic Diagnosis to Histologic Diagnosis in the Patients with Carcinoma In Situ and Microinvasive Carcinoma Treated with Surgical Excisions / 대한산부인과학회잡지

No abstract available.