Pelvic Exenteration

Pelvic Exenteration
Mario M. Leitao Jr
Richard R. Barakat
INTRODUCTION
Dr. Alexander Brunschwig was the first to report on the complete excision of pelvic viscera for advanced cancer (i.e., pelvic exenteration) in 1948. He described this procedure as “the most radical surgical attack so far described for pelvic cancer and also [what] would appear to be the most radical of abdominal operations that have been carried out with some measure of consistency.” The first operation was performed on December 12, 1946, at Memorial Hospital, which eventually became Memorial Sloan Kettering Cancer Center, in New York. Figures 54.1 and 54.2 are diagrams from Brunschwig’s manuscript. This manuscript included 22 cases, 15 of which were recurrent cervical cancers, and follow-up was very short (maximum follow-up was 8 months). There were 5 (23%) perioperative mortalities and a total of 9 (41%) deaths within 8 months. Subsequent reports from the same institution of the same procedure in patients with ovarian and endometrial cancers described 5-year overall survival (OS) of 7% and 14%, respectively, with morbidities of over 60% and perioperative mortalities of 23%. In 1989, Lawhead and colleagues reported an updated series on mostly cervical cancer patients; the 5-year OS was 23%. These early reports suggested that the procedure had a perioperative mortality that was similar to the 5-year OS, at the cost of severe short-term and long-term morbidity as well as absence of vagina. Therefore, it fell out of favor and was infrequently performed for many years.
FIGURE 54.1 Levels of transection for a translevator total pelvic exenteration, as described by Dr. Alexander Brunschwig. “c” is the transection at the rectosigmoid junction. “u” and “u’” are the levels of transection of the ureters. “PW” is the perineal phase with transection of the vulva, perineum, and anus. This has remained the basic level of transection to date. However, portions of the labia and the entire clitoris can often be spared. (Reprinted from Brunschwig A. Complete excision of pelvic viscera for advanced carcinoma. Cancer 1948;1:177-183, with permission. Copyright © 1948 American Cancer Society.)
FIGURE 54.2 The end result of an exenteration as described in Dr. Alexander Brunschwig’s original manuscript. The perineum is primarily closed without vaginal reconstruction, and a wet colostomy is noted. (Reprinted from Brunschwig A. Complete excision of pelvic viscera for advanced carcinoma. Cancer 1948;1:177-183, with permission. Copyright © 1948 American Cancer Society.)
As surgical techniques and perioperative management improved over subsequent years, investigators began to report improving outcomes with decreasing perioperative mortalities. Additionally, publications after the year 2000 report continued decreases in perioperative mortality. These reports are described in greater detail later in the chapter. Pelvic exenteration is now felt to be a reasonable option in select cases, if performed by experienced surgeons. It can provide a chance at long-term cancer control and survival, but it remains a highly morbid procedure.
Pelvic exenterations can be modified based on the tumor size and location. There are multiple options for vaginal reconstruction as well as for different types of urinary system diversions separate from the fecal system. Permanent end colostomies are still required in the vast majority of cases, but in highly select situations, it may be possible to reconnect the large bowel and avoid a permanent colostomy. The indications for these pelvic exenterative procedures have also been expanded at certain institutions. More attention is also paid to sexual issues in these women as well as to overall quality of life after such extensive procedures. The most commonly performed exenteration is a total pelvic exenteration, followed by anterior, and then posterior (Table 54.1).
INDICATIONS AND PREOPERATIVE EVALUATIONS
The selection of patients suitable for a pelvic exenteration is highly complex and individualized. The most common indication is recurrent cervical carcinoma limited to the central pelvis in a patient who has received prior full-dose pelvic radiotherapy (Table 54.2). Exenteration is also considered in select cases of patients with recurrent endometrial, vulvar, or vaginal carcinomas. Uterine sarcomas are extremely rare. The majority of patients with these tumors will have extrapelvic sites of disease at the time of recurrence, in which case exenterative procedures are contraindicated. However, in cases of pelvic-only recurrences in patients with uterine sarcomas, exenteration may be possible. Exenteration is most often only considered if radiation therapy has been already utilized in the past and no further radiation therapy is possible. Primary exenteration at the time of initial diagnosis, as well as in patients who have not undergone prior radiation, has been reported, but should be reserved for few select cases.
TABLE 54.1 Types of Exenterations Performed in Published Series of Pelvic Exenteration for Gynecologic Malignancies

AUTHOR (REFERENCE)

YEAR OF PUBLICATION

STUDY YEARS

N

TYPE OF EXENTERATION

TOTAL

ANTERIOR

POSTERIOR

Brunschwig

1948

1946-1948

22

22

0

0

Barber

1968

1947-1963

36

22

14

0

Symmonds

1975

1950-1971

198

66

114

18

Rutledge

1977

1955-1976

296

176

85

35

Lawhead

1989

1972-1981

65

48

14

3

Shingleton

1989

1969-1986

143

78

63

2

Soper

1989

1970-1987

69

41

16

12

Morley

1989

1964-1984

100

69

13

18

Stanhope

1990

1977-1986

133

49

22

1

Robertson

1994

1974-1992

83

28

54

1

Morris

1996

1955-1988

20

10

9

1

Goldberg

1998

1954-1994

154

72

65

17

Barakat

1999

1947-1994

44

23

20

1

Berek

2005

1956-2011

75

46

23

6

Goldberg

2006

1987-2003

103

103

0

0

Ungar

2008

1993-2006

41

2

39

0

Fotopoulou

2010

2003-2009

47

32

12

3

Benn

2011

1990-2009

54

36

13

5

Forner

2011

1999-2010

35

16

17

2

Kaur

2012

1999-2010

36

27

5

3

Khoury-Collado

2012

1997-2001

21

14

6

1

Schmidt

2012

282

262

14

6

Yoo

2012

2001-2011

61

42

17

2

Baiocchi

2013

1982-2010

77

42

18

8

TOTAL

2,195

1,326 (60%)

653 (30%)

145 (10%)

Exenteration was largely abandoned for patients with recurrent ovarian cancers after Barber and colleagues reported a dismal 5-year survival of 7%. However, this report was published in a time prior to effective systemic therapies. Total and/or anterior pelvic exenteration is still not a consideration in the vast majority of patients with newly diagnosed or recurrent ovarian cancers except in exceptional situations (e.g., palliation for a hemorrhaging pelvic tumor not amenable to other palliative measures). In general, palliation is rarely accepted as an indication for exenterative procedures. However, some form of supralevator posterior exenteration (i.e., “modified posterior exenteration”), as well as other bowel resections, are now routinely considered and performed in patients with newly diagnosed and recurrent ovarian cancers. These modified posterior exenterations are not as extensive, and ovarian cancer outcomes are generally quite different from those of the other sites. We will not include these modified posterior exenteration procedures for ovarian cancer in the remainder of the chapter.
TABLE 54.2 Primary Tumor Sites in the Published Series of Exenterations in Gynecologic Malignancies

Only gold members can continue reading. Log In or Register to continue

Stay updated, free articles. Join our Telegram channel

Jun 4, 2016 | Posted by in GYNECOLOGY | Comments Off on Pelvic Exenteration

Full access? Get Clinical Tree

Get Clinical Tree app for offline access

AUTHOR (REFERENCE)

YEAR OF PUBLICATION

STUDY YEARS

PRIMARY TUMOR SITE

CERVIX

ENDOMETRIUM

UTERINE SARCOMA

VAGINA

VULVA

CANCER, NOS

OVARY

NON-GYN

Brunschwig

1948

1946-1948

15

1

1

1

2

1

0

1

Barber

1965

1947-1958

0

0

0

0

0

0

22

0

Barber

1968

1947-1963

0

36

0

0

0

0

0

0

Symmonds

1975

1950-1971

59

13

0

27

8

7

4

22

Rutledge

1977

1955-1976

195

8

0

37

14

0

0

20

Lawhead

1989

1972-1981

51

2

0

5

4

1

2

0

Shingleton

1989

1969-1986

143

0

0

0

0

0

0

0

Soper

1989

1970-1987

41

4

0

14

4

5

0

1

Morley

1989

1964-1984

66

4

4

13

12

0

1

0

Stanhope

1990

1977-1986

133

0

0

0

0

0

0

0

Robertson

1994

1974-1992

54

4

0

14

6

0

1

4

Morris

1996

1955-1988

0

20

0

0

0

0

0

0

Goldberg

1998

1954-1994

109

13

0

15

9

2

4

2

Barakat

1999

1947-1994