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Biomedical subjects

A D DePetrillo

Publications and source records attributed to A D DePetrillo.

18 recordsLinked to original sources
PubMed2002

How important is removal of the parametrium at surgery for carcinoma of the cervix?

OBJECTIVES: The aims of this study were (1) to determine the incidence and factors predictive for pathologic parametrial involvement in clinical stage IA1/2 and IB1 cervical cancer after radical surgery and (2) to identify a population at low risk for pathologic parametrial involvement. METHODS: All patient information was collected prospectively and extracted from a cervical cancer radical surgery database. Selection criteria for surgery were generally based upon tumor size, with the cutoff for surgery between 3 and 4 cm. Parametrial involvement (PI) was defined as either positive parametrial lymph nodes (PMLN) or malignant cells in the parametrial tissue (PT) (including lymphovascular channels) by either contiguous or discontiguous spread. Statistical analysis included the chi2 test, the Wilcoxon rank test, and the Mantel-Haentzel test. RESULTS: Between July 1984 and January 2000, 842 patients underwent radical surgery for clinical stage IA1/2 and IB1 cervical cancer at our center. Forty-nine patients (6%) had positive pelvic lymph nodes. Thirty-three patients (4%) had pathologic PI, 8 in the PMLN and 25 in the PT (none had both). PI was associated with older age (42 vs 40 years, P < 0.04), larger tumor size (2.2 vs 1.8 cm, P < 0.04), higher incidence of capillary-lymphatic space invasion (85% vs 45%, P = 0.0004), tumor grades 2 and 3 (95% vs 65%, P = 0.001), greater depth of invasion (18.0 vs 5.0 mm, P < 0.001), and pelvic lymph node metastases (44% vs 5%, P < 0.0001). The incidence of PI in patients with tumor size < or =2 cm, negative pelvic lymph nodes, and depth of invasion < or =10 mm was 0.6%. CONCLUSION: Pathologic parametrial involvement in clinical stage IA1/2 and /IB1 cervical cancer is uncommon. Acknowledging that almost all patients with pelvic lymph node metastases and a high proportion of patients with tumor invasion >10 mm will receive adjuvant radiation regardless of the radicality of surgery, a population at low risk for pathologic parametrial involvement can be identified. These patients are worthy of consideration for studies of less radical surgery performed in conjunction with pelvic lymphadenectomy.

Adult↗
PubMed2001

Changes in the demographics and perioperative care of stage IA(2)/IB(1) cervical cancer over the past 16 years.

OBJECTIVES: The aim of this study was to determine whether there have been any significant changes in the demographics and perioperative care of FIGO stage IA(2)/IB(1) cervical cancer over the past 16 years and, if so, to quantify them. METHODS: Since July 1984, all patients with FIGO stage IA(2)/IB(1) cervical cancer undergoing radical surgery by members of our division have been entered into a prospective database. Selection for surgery has been unchanged over the past 16 years. Since March 1994 and November 1996, one surgeon has performed radical vaginal trachelectomy and laparoscopic assisted radical vaginal hysterectomy, respectively. Statistical analysis used Spearman's correlation analysis, the proportional hazards regression model of Cox, and the Mantel-Hanzel test was performed. Due to the number of statistical analyses, statistical significance was defined as P < 0.01. RESULTS: Eight hundred sixty-four patients have undergone radical surgery (784 radical hysterectomy, 42 radical vaginal trachelectomy, 32 radical vaginal hysterectomy, 6 radical abdominal trachelectomy) for FIGO stage IA(2)/IB(1) carcinoma of the cervix by members of our division since 1984. There have been no changes in the median age (40 years), tumor size (2.0 cm), incidence of capillary lymphatic space involvement (47%), or positive pelvic lymph nodes (6%) over the past 16 years. The median Quetelet index (24.6), depth of tumor invasion (squamous cell carcinomas only) (6.0 mm), and proportion of patients with comorbid conditions (17%) have increased over time (P = 0.001, P = 0.003, and P < 0.001, respectively). Pathologically, there has been an increase in the proportion of adenocarcinomas (28%) and a decrease in the proportion of grade 3 tumors (28%) (P < 0.001 and P < 0.001, respectively). The median operating time (2.8 h), hospital stay (7.0 days), blood loss (600 cc), allogeneic blood transfusion (23%), postoperative infections (13%), and noninfectious complications (6%) have all decreased (P < 0.001, P < 0.001, P < 0.001, P < 0.001, P < 0.001, and P = 0.002, respectively). There has been no change in the incidence of positive surgical margins (3%), adjuvant radiation (13%), or recurrence-free survival (2 and 5 years, 94 and 90%, respectively) after a median follow-up of 45 months. CONCLUSION: Despite no substantive changes in the selection criteria for surgery and the small time interval studied (16 years), almost all indices of operative and postoperative morbidity analyzed have decreased significantly. These changes have occurred without an increase in the use of adjuvant radiation or decrease in recurrence-free survival. Although little progress has been made in the cure rates associated with surgical management of FIGO stage IA(2)/IB(1) cervical cancer during this time interval, it appears that the morbidity of surgery has decreased.

Adenocarcinoma↗
PubMed1998

Quality-of-life information and clinical practice: the oncologist's perspective.

OBJECTIVE: To collect information from a group of Canadian oncologists about their perspectives on quality of life (QOL) and QOL information. DESIGN: A self-administered questionnaire (MD-QOL) containing 75 items with a 4-point Likert categorical response scale was administered by mail using Dillman survey methodology to all staff oncologists at a single institution. SETTING: A large Canadian cancer care centre (Princess Margaret Hospital, Toronto). MAIN OUTCOME MEASURES: Oncologists' knowledge, attitude, current behaviour and intended willingness to use QOL information. RESULTS: Of 67 eligible respondents 54 replied (80% response rate). In all, 74% felt that QOL can be quantified, and 95% felt that it gives information distinct from performance status measures. A total of 87% felt that published QOL data are useful for individual patient care, but 69% indicated that, at present, they would be more likely to base their recommendations on personal experience rather than on published literature. Of the respondents, 57% felt that decisions were made more difficult when QOL issues are considered. CONCLUSIONS: The surveyed oncologists support the relevance and importance of QOL information. Data from this study were used to develop a predictive model to assess oncologists' willingness to use QOL information; the model is being tested in other studies.

Adult↗
PubMed1996

Physicians' perspective on quality of life: an exploratory study of oncologists.

There is an implicit assumption that physicians incorporate quality of life (QOL) information in clinical decision-making. However, very limited data exists on how physicians view QOL information and how they actually use it. To explore this issue, an in-depth study was conducted using a semi-structured interview guide, with 60 oncologists in Canada and the USA. While the majority of respondents perceived QOL as important they reported a tendency to use it informally and not in all situations. Key findings include the belief expressed by 88% of respondents that the term QOL could be defined, although they differed in their definitions. Although 85% stated that QOL can be formally measured, only a third perceived that the current instruments provide valid and reliable data. Respondents noted a number of significant benefits and drawbacks of using QOL data in their clinical practice that had not been previously noted in the literature. For example, its use as an endpoint in clinical trials was generally perceived to enhance both physician and patient participation. A drawback noted was that including QOL might adversely affect the decision-making process. These findings have been used to develop a self-administered questionnaire (MD-QOL) which will test the generalizability of these findings.

Adult↗
PubMed1996

Laparoscopic ovarian transposition.

Preservation of ovarian function is both safe and feasible in many young women with pelvic malignancies. Techniques utilized to transpose the ovaries to date have uniformly required a laparotomy either at the time of surgical treatment or as a separate operation in patients about to undergo pelvic radiotherapy. We report our preliminary results in 3 patients who underwent laparoscopic ovarian transposition and pelvic lymphadenectomy as part of an experimental protocol using intracavitary radiation alone in patients with small node negative stage 1B cervical carcinoma desiring preservation of fertility. Dose calculations were performed to estimate the amount of radiation each transposed ovary received from the intracavitary radiation, as well as the dosage that would have been received had external pelvic (4500 cGy) with or without para-aortic nodal irradiation (4500 cGy) been required. The mean estimated distance each ovary was transposed was 14.4 cm for the right ovary and 14.3 cm for the left ovary. Operative times ranged from 2.75-4.0 hours, and the blood loss 100-300 mls. Post-operative hospital stays ranged from 1-2 days, and no complications were encountered. Two of the 3 patients are menstruating regularly 25-32 months after completion of treatment with serum FSH in the normal premenopausal range. Based on the above distances, the mean dose of radiation each transposed ovary received was estimated to be 126 cGy, whereas the range in dosage of radiation each ovary would have received had external pelvic +/- para-aortic nodal irradiation been required was 135-190 cGy, and 230-310 cGy respectively. One patient has become menopausal after her transposed ovaries slipped back into the pelvis. Laparoscopic ovarian transpositions can be performed. This procedure is technically easy to perform for those surgeons skilled in laparoscopic surgery and its preliminary morbidity appears to be low. More experience, longer followup, and refinement in the methods of ovarian transfixation are required.

Adult↗
PubMed1995

Clinical review of adult granulosa cell tumors of the ovary.

Granulosa cell tumors are uncommon neoplasms that are characterized by their long natural history and for their tendency to recur years after an apparent clinical cure. As such they are difficult tumors to study. In the majority of cases, the initial therapy is surgical although the extent of the necessary procedure remains controversial. The role for any adjuvant therapy after complete resection remains to be established. In patients with advanced disease, combination chemotherapy consisting of cisplatinum/vinblastine/bleomycin has the highest identified response rates. In patients with recurrent or metastatic disease therapy is palliative and has not yet been standardized. Treatments therefore need to be individualized.

Female↗
PubMed1993

Etiology, epidemiology, risk and prognostic factors, screening, and imaging of gynecologic cancers.

This review presents some of the articles published over the past year pertaining to the etiology, epidemiology, risk and prognostic factors, screening, and imaging techniques of gynecologic cancer. The most significant advances in this period were made in the area of the genetics of gynecologic cancers and the factors that control tumor growth. New technologies are being developed in this area, which may eventually produce therapies aimed at controlling gynecologic cancers at the genetic or cellular level. Research continues for ideal screening tests for noncervical gynecologic cancers. Continuing advances were made in imaging techniques, eg, magnetic resonance imaging, which can now display very high-resolution pictures of cancers in vivo, but this technology is limited by both cost and insufficient studies proving its value.

Endometrial Neoplasms↗
PubMed1991

Changing concepts in the management of vulvar cancer.

Vulvar carcinoma varies widely in its clinical presentations and prognosis. The reviewed literature outlines the achievements of conventional surgery, radiation, or chemoradiation therapy in its management. Currently therapeutic concepts are evolving. New treatment strategies replacing the uniform use of radical vulvectomy and bilateral groin dissection are proposed. These strategies are tailored to the clinical and pathological disease extent and location and integrate the possible therapeutic advantages of both surgery and chemoradiation. The testing and use of the proposed multimodality therapy protocols require the expertise of gynecologic, radiation, and medical oncologists. This approach should lead to improved anatomic and functional preservation in early disease and improved locoregional in advanced disease.

Algorithms↗
PubMed1987

Current therapy for dysgerminoma of the ovary.

It is important that therapy of ovarian dysgerminoma be optimized because of the young age of women affected and the threat that therapy may pose to fertility. Our understanding of dysgerminoma has improved, so that treatment schemes with better therapeutic ratio may now be used. Approximately 65% of patients present with stage IA disease. For those wishing to preserve fertility, conservative surgery with close clinical, radiologic, and serologic follow-up is the treatment of choice, with chemotherapy for relapse. Cure rates should approach 100%, and fertility is usually preserved. Intra-abdominal relapse in those not wishing to preserve fertility should be treated with modest-dose pelvic and abdominal irradiation. For those patients with disease presenting in stages IB, II, and III who wish to maintain fertility, unilateral oophorectomy followed by combination chemotherapy may be curative and spare ovarian function. Otherwise, complete surgery, followed by abdominopelvic radiation therapy, is recommended. This treatment produces less morbidity than chemotherapy and will cure approximately two-thirds of patients. Chemotherapy should be used for salvage of subsequent relapse. Both radiation and chemotherapy are highly effective treatment modalities for dysgerminoma. This information, coupled with better understanding of the patterns of disease spread and improved ability to identify nondysgerminomatous elements using serum tumor markers, means that a more conservative approach can be taken to management without compromising the chance of cure. Cure rates for dysgerminoma should now approach the role of 97% achieved in the comparable tumor, testicular seminoma.

Combined Modality Therapy↗
PubMed1984

Appendicitis masking as recurrent squamous cell carcinoma of the cervix.

The diagnosis of pelvic recurrent squamous cell carcinoma of the cervix is made on the basis of clinical assessment and radiologic confirmation. Occasionally the diagnosis is confused with sequelae of radiation therapy. The authors describe the symptoms and signs of appendicitis mimicking recurrent squamous cell carcinoma in a 43-year-old female. A 10-year search of the literature has failed to detect another case report or review. The authors believe that, if there is ever any doubt as to the diagnosis of pelvic recurrent squamous cell cancer, exploratory laparotomy and biopsies are warranted for confirmation.

Adult↗
PubMed1983

Stage I endometrial adenocarcinoma: treatment results in 835 patients.

A 16-year review of 835 patients with Stage I adenocarcinoma of the uterus revealed histologic grade and depth of myometrial invasion to be salient prognostic factors. Sixteen percent of patients developed recurrent disease and despite aggressive treatment, only 10% of these survived. Preoperative or postoperative radium decreased the incidence of vault recurrence.

Adenocarcinoma↗
PubMed1980

Sustained remission of choriocarcinoma with cis-platinum, vinblastine, and bleomycin after failure of conventional combination drug therapy.

Combination chemotherapy with methotrexate, actinomycin D. and an alkylating agent (MAC) has become widely used for patients with "high-risk" gestational choriocarcinoma. When such chemotherapy fails to obliterate this disease the prognosis has been uniformly poor. Chemotherapy failure may result from excessive toxicity or tumor resistance. Two patients are presented who failed treatment with MAC. Both have achieved sustained clinical and serum beta subunit-hCG titer remission of choriocarcinoma with the use of the drugs cis-platinum, vinblastine, and bleomycin.

Adult↗
PubMed1975

Colposcopic evaluation of the abnormal Papanicolaou test in pregnancy.

Colposcopy, including colposcopically directed biopsies in selected cases, was employed to evaluate over 300 pregnant patients with abnormal Papanicolaou tests suggestive of mild dysplasia or worse (Class III to V). Over half of the patients had benign disorders determined by colposcopic examination. All cases of invasive disease were diagnosed by colposcopy and biopsy, and the patients were treated accordingly. Only 3 diagnostic conizations were necessary in the antepartum period. The majority of patients with cervical intraepithelial neoplasia were seen post partum, and appropriate therapy was instituted. In the pregnant patient with an abnormal Papanicolaou test, colposcopy has proved to be a reliable and safe method of evaluation and has virtually eliminated the need for conization.

Biopsy↗