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41 TaTME forAbdominoperineal Excision
421

Operative Procedure

A multimedia manuscript demonstrating our technique for TpAPE has been published previ­ously [5]. After positioning, the operation com­mences with a circumferential skin incision around the anus, with appropriate margins away from the tumor. Subcutaneous fat tissue is divided using electrocautery so that the ring portion of the GelPOINT-mini® device can be accurately placed. When the skin incision becomes large enough, a purse-string suture is applied, which is benecial to prevent air leakage during surgery (Fig. 41.3). Following the xation of the GelPOINT-mini device, pneumoperitoneum is maintained at 8–12 mmHg, and division of the subcutaneous and ischioanal fat is performed (Fig.41.4).
One can choose from among several dissec­tion planes depending on the extent of tumor invasion. This includes the intersphincteric, the extralevator, or the ischioanal planes (Fig.41.5). The tip of the coccyx is identied, and the levator ani is widely exposed bilaterally (Fig.41.6). The levator ani is divided posteriorly just anterior to
the tip of the coccyx. The hiatal ligament, a white brous tissue connecting the coccyx and the rec­tum, is divided with special care so it does not migrate into the mesorectum or posterior rectal wall. Once the mesorectal plane is identied, division of the levator muscle is extended bilater­ally, and the endopelvic fascia covering the leva­tor ani is also divided to enter the mesorectal plane (Fig.41.7).
Posterior dissection is continued until this plane is connected with the laparoscopic dissec­tion. The level of division of the levator muscle can be determined at the surgeon’s discretion, mainly depending on the extent of tumor inva­sion. Here, the roots of the pelvic splanchnic nerves are identied bilaterally, and special care is taken to avoid injury to the autonomic nerves of the pelvis (Fig.41.8).
Next, the anterior dissection is addressed. The anterior dissection is more difcult in male patients than in female patients because there is the potential risk of urethral injury in males. Therefore, we describe here the dissection in male patients. The transverse perineal muscle is an important landmark as it divides the anterior
c d
Fig. 41.3 Skin incision to GelPOINT placement. (a) Skin incision can be minimal when skin is spared from tumor invasion. (b) Subcutaneous fat is divided to some
extent to place the GelPOINT device. (c) Purse-string suture is useful to keep the surgical eld air-tight. (d) GelPOINT® placement
422
cd
Modified form Holm et al. Surg OncolClinN Am. 2014
S. Hasegawa et al.
a b
IRA
ACL
Fig. 41.4 Division of the ischioanal fat. (a) Left side. (b) Right side (IRA inferior rectal artery). (c) Posterior side (ACL ano-coccygeal ligament). (d) Anterior side
Fig. 41.5 Perineal dissection planes in APE. (a) Ischioanal APE. (b) Extralevator APE. (c) Intersphincteric APE. (Modied form Holm etal. [7])
c)
a)
urogenital area and the posterior anorectal area. We dissect just behind the transverse perineal muscle, and here the bilateral puborectal sling, which is oriented along the posterior-anterior axis, is identied. There is no clear anatomical
b)
landmark at this point to divide the puborectalis and levator ani muscles. The dissection line should thus be determined based on the extent of tumor inltration, from extralevator resection to standard resection (Figs.41.9 and 41.10).
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41 TaTME forAbdominoperineal Excision
LA
423
LA
TP
EAS
Fig. 41.6 Exposure of the levator ani muscle and puborectal muscle. (a) Left side (LA levator ani). (b) Right side (LA levator ani). (c) Anterior side (TP trans-
HL
MR
verse perineal muscle, EA external anal sphincter). (d) Posterior side (PR puborectal muscle). Blue marker indi­cates the tip of the coccyx
LA
PR
MR
MR
PSN
EPF
Fig. 41.7 Division of the levator ani muscle and entering into the posterior TME plane. (a) Division of the levator muscle (HL hiatal ligament). (b) Exposure of the posterior
mesorectum (MR) (LA levator ani muscle). (c) Posterior mesorectal dissection (MR mesorectum, EPF endopelvic fascia). (d) Identication of the bilateral pelvic splanchnic nerves (PSN) (MR mesorectum)
424
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S. Hasegawa et al.
PSN
Fig. 41.8 Lateral extension of the dissection plane. (a) Connection of the dissection plane with laparoscopic team. (b) Extension of the division of the levator ani mus-
TP
LA
PSN
MR
cle (LA) to right side (MR mesorectum). (c) Dissection between mesorectum and left pelvic splanchnic nerve (PSN). (d) Dissection between mesorectum and right pel­vic splanchnic nerve (PSN)
RUM
PR PR
PR
LA
Fig. 41.9 Right anterior-lateral dissection. (a) Surgical eld after division of behind the transverse perineal mus­cle. (b) Division of the right puborectal sling (PR). (c)
Division of the right puborectal sling (PR) and levator ani muscle (LA). (d) Surgical eld after division of the levator ani muscle (LA) (EPF endopelvic fascia, MRA middle
PR
LA
EPF
MRA
MR
rectal artery, MR mesorectum)
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41 TaTME forAbdominoperineal Excision
425
RUM
LA
Fig. 41.10 Left anterior-lateral dissection. (a) Division of the left puborectal sling (PR) (RUM rectourethral mus­cle). (b) Left puborectal sling (PR) and levator ani muscle (LA). (c) Laparoscopic assistance (right upper window) is helpful for better exposure and identication of the anat-
PR
SV
MR
Once the puborectal muscle sling is divided,
the perineal body or rectourethral muscle, which
MR
omy (LA levator ani muscle, MR mesorectum, SV semi­nal vesicle). (d) After division of the levator ani muscle (LA), dissection between neurovascular bundle (NVB) and mesorectum is performed under laparoscopic assis­tance (SV seminal vesicle)
specimen is extracted from below, and a perma­nent sigmoid colostomy is fashioned.
PR
LA
SV
LA
contains abundant smooth muscle bers and brous connective tissue, is encountered. There is no clear anatomical landmark here, and special care should be taken not to injure the urethra,
How toAvoid Urethral Injury During TpAPE
neurovascular bundle, and prostate (see “How to avoid urethral injury” below). Laparoscopic assistance to identify the contour of the prostate is benecial to ensure safe and adequate dissec­tion in this area (Fig.41.10). When the apex of the prostate is identied, the following step is almost identical with that of TaTME. Here, the dissection plane is easy to distinguish between the prostate and the rectum.
Dissection is widely commenced cranially and connected to the space with laparoscopic dissection. Finally, bilateral mesorectal dissec­tion between the mesorectum and pelvic auto­nomic nerves is performed with the assistance of the laparoscopic team (Figs. 41.11 and
41.12). The sigmoid mesentery and sigmoid
colon are divided laparoscopically. The resected
Urethral injury is a very important and serious complication of this procedure. For male patients, the risk of urethral injury is likely increased in TpAPE procedures as compared with TaTME because the dissection plane easily goes more toward the lateral side of the prostate as com­pared with TaTME. Several methods have been proposed to prevent this serious complication, such as urethral lighted stent placement, intraoperative ultrasonography, and stereotactic navigation [6]. The key anatomic consideration around this area is identication of the apex of the prostate. Assistance with the laparoscopic approach helps to predict the contour of the pros­tate even if it is just the level of the upper border of the prostate.
NVB
MR
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RUM
Pr
Pr
NVB
MR
Fig. 41.11 Dissection of the rectourethral muscle and right neurovascular bundle. (a) Dissection between meso­rectum and inferior part of the prostate (Pr). Rectourethral muscle (RUM) can be identied as longitudinal whitish
a
RUM
Pr
NVB
MR
NVB
bers. (b) Division of the rectourethral muscle (RUM) (Pr prostate). (c) Dissection between right neurovascular bun­dle (NVB) and mesorectum (MR). (d) Finally, right lat­eral attachment is divided, and TpAPE is completed (NVB neurovascular bundle, MR mesorectum)
b
c
Fig. 41.12 Surgical eld after specimen extraction. (a) Transanal view. (b) Transanal view. (c) Laparoscopic view. (d) Resected specimen
d
41 TaTME forAbdominoperineal Excision
427
Dissection Along theRectovaginal Septum
For female patients, at the anterior aspect, the perineal body can be divided under direct vision at the most inferior part of the vagina, where there is no clear dissection plane, under the guid­ance of digital examination and tactile feedback. Once a clear dissection plane between the poste­rior vaginal wall and rectum is identied, it is relatively easy to maintain this plane toward peri­neal reection. This can be assisted by tactile feedback through digital palpation of the vaginal vault during the process of dissection.
Pros andCons ofTpAPE
Pros
• Good exposure of the surgical eld, especially
along the anterior aspect.
• No air leakage when combined with the lapa-
roscopic approach.
• Skin incision can be minimized if perianal
skin is spared from tumor invasion.
• Operative time could be reduced with the two-
team approach.
Cons
• Because the surgical anatomy around the anal
canal is relatively complex, it is difcult to
identify an appropriate dissection line at the
anterior side, despite good visibility.
• Extra cost and resources are required for the transperineal procedure.

References

1. Simillis C, Baird DL, Kontovounisios C, etal. A sys-
tematic review to assess resection margin status after abdominoperineal excision and pelvic exenteration for rectal cancer. Ann Surg. 2017;265:291–9.
2. den Dulk M, Putter H, Collette L, etal. The abdomi-
noperineal resection itself is associated with an adverse outcome: the European experience based on a pooled analysis of ve European randomised clinical trials on rectal cancer. Eur J Cancer (Oxford, England:
1990). 2009;45:1175–83.
3. Martijnse IS, Dudink RL, West NP, et al. Focus on
extralevator perineal dissection in supine position for low rectal cancer has led to better quality of surgery and oncologic outcome. Ann Surg Oncol. 2012;19:786–93.
4. Palter VN, MacLellan S, Ashamalla S.Laparoscopic
translevator approach to abdominoperineal resection for rectal adenocarcinoma: feasibility and short-term oncologic outcomes. Surg Endosc. 2016;30:3001–6.
5. Hasegawa S, Okada T, Hida K, Kawada K, Sakai
Y. Transperineal minimally invasive approach for extralevator abdominoperineal excision. Surg Endosc. 2016;30:4620–1.
6. Atallah S, Mabardy A, Volpato AP, Chin T, Sneider
J, Monson JRT. Surgery beyond the visible light spectrum: theoretical and applied methods for localization of the male urethra during trans­anal total mesorectal excision. Tech Coloproctol. 2017;21:413–24.
7. Holm T. Controversies in abdominoperineal excision.
Surg Oncol Clin N Am. 2014;23(1):93–111.
Hartmann’s Reversal by a Combined Transanal­Transabdominal Approach
Jean-Sébastien Trépanier, F. Borja de Lacy, and Antonio M. Lacy
42

Introduction

Henri Hartmann rst described his eponymous operation in 1921 at the 30th Congress of the French Surgical Association [1]. It was initially proposed for the treatment of rectal cancer, in an attempt to lower the morbidity associated with the abdominoperineal resection, developed by William Ernest Miles at the beginning of the twentieth century. Nowadays, the Hartmann’s procedure is still commonly performed in various benign and malignant conditions and both in elective and emergent settings. After this opera­tion, many patients will never undergo colostomy closure (or Hartmann’s reversal– HR). In the lit­erature, closure rates range between 28% and 60% [2, 3]. Restoring intestinal continuity is often a technically challenging operation and has signicant risks of mortality and morbidity, respectively, up to 10% and 50% [3]. Quality of life is often impaired in patients with a colostomy
J.-S. Trépanier (*) Maisonneuve-Rosemont Hospital, General Surgery Department, Montréal, Québec, Canada e-mail: js.trepanier@umontreal.ca
https://www.aischannel.com
F. B. deLacy · A. M. Lacy Gastrointestinal Surgery Department, Hospital Clinic, University of Barcelona, Barcelona, Spain e-mail: bdelacy@aischannel.com;
amlacy@aischannel.com https://www.aischannel.com
for various reasons, and it could be improved with a Hartmann’s reversal [4].
Interest in minimally invasive surgery (MIS)
has grown signicantly in the last decades and is justied by diminished surgical trauma, resulting in better outcomes for many patients who undergo colorectal procedures. Thus, laparoscopic approaches for reversal of Hartmann’s procedure using multiport or single-port congurations have been attempted [59]. They were shown to be safe in trained hands and are associated with faster postoperative recovery and fewer compli­cations based on recent publications [1014]. In 2014, a robotic approach to HR was described as a case report [15].
Even with these different MIS approaches,
HR remains a challenging operation. The rates of laparoscopic HR remain low (17.6%) according to a study of the ACS-NSQIP data [16]. When a laparoscopic approach is chosen, the conversion rates to an open procedure are as high as 50% [17]. Conicting data regarding the benets of laparoscopy for HR was demonstrated by a recent retrospective study of 276 patients: it failed to demonstrate a difference regarding the length of stay and complication rate [18]. Therefore, the search for a different approach for HR remains pertinent.
With the rapid development of advanced trans-
anal procedures, from transanal endoscopic microsurgery (TEM) [19, 20] to transanal mini­mally invasive surgery (TAMIS) [21], and more
© Springer Nature Switzerland AG 2019 S. Atallah (ed.), Transanal Minimally Invasive Surgery (TAMIS) and Transanal Total Mesorectal Excision (taTME), https://doi.org/10.1007/978-3-030-11572-2_42
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J.-S. Trépanier et al.
recently transanal total mesorectal excision (taTME) [2224], sound prociency in dissection from a bottom-up approach was gained by various surgeons around the world. In selected cases where visualization from a transanal standpoint would be deemed helpful, a combined transanal­laparoscopic transabdominal Hartmann’s reversal (taHR) was proposed as another approach. It has been previously described by Dr. Antonio Lacy’s team [2527]. To date, it remains experimental. It should be reserved to medical centers with thor­ough expertise in transanal surgery.
The expected advantages of this approach include (a) transanal dissection through intact, virgin planes, (b) improved ability to localize the rectal stump (especially when short and covered by peritoneum), (c) optimal visualization during surgery in a narrow pelvis, and, nally, (d) the advantage of performing a double purse- string single-stapled anastomosis with rectal tissues free of brosis or staple lines. This chapter is intended to describe taHR and share various tech­nical tips and pitfalls.

Preoperative Planning

ation is crucial for proper planning. Also, reopera­tive pelvic surgery can place the ureters at risk for injury; therefore, consideration for preoperative placement of ureteral stents should be given.

Operative Setup

For the taHR, we favor a two-team approach. It allows for performance of the procedure with assistance of a second team for plane dissection using the two points of view. Thus, two complete teams are operating simultaneously; each one includes a surgeon, one or two assistants, a scrub nurse, and a dedicated set of instruments.

Technique Description (Table 42.1)

taHR: Abdominal Aspects
Whenever possible, a laparoscopic approach is favored for the abdominal portion of the taHR operation. It should start with the colostomy take­down, placement of a single-port platform in the
Patients should be well informed on the innovative aspect of this approach for intestinal continuity reconstruction. Also, it is our opinion that every case should be included in a prospective registry to mea­sure outcomes, and, ideally, patients should be part of a study protocol with internal review board approval.
Preoperatively, all patients are evaluated by digital rectal examination and endoscopy of both their rectal remnant and proximal colon. A con­trast enema of the rectal stump is also performed to measure its length and visualize its position in the pelvis. Pre-colostomy, baseline anorectal function is determined before proceeding, to pro­vide realistic expectations of functional outcomes after reconstruction and to exclude candidates for whom HR would result in a poor quality of life. A combined transanal-transabdominal approach is considered when the rectal stump appears short (less than 15cm). Knowledge of the indications for which the initial Hartmann’s procedure was performed and the circumstances of the rst oper-
Table 42.1 Steps of a taHR
Abdominal steps Transanal steps
1. Colostomy takedown. 1. Placement of the exible
2. Placement of an EEA stapler anvil in the proximal colon.
3. Single-port device in stoma site.
4. Pneumoperitoneum. 4. Rectotomy.
5. Placement of trocars. 5. Dissection and
6. Lysis of adhesions. 6. Purse string on the open
7. Mobilization of the left colon and splenic exure.
8. Identication of the rectal stump if possible.
9. Anastomosis under
laparoscopic guidance.
transanal platform.
2. Evaluation of the rectal stump.
3. Choice of the site of rectotomy and mucosa tattooing.
rendezvous. Extraction of the resected portion of rectal stump.
rectal stump.
7. Tying of the purse string on the EEA anvil.
8. Double purse-string single-stapled anastomosis.
42 Hartmann’s Reversal by a Combined Transanal-Transabdominal Approach
431
colostomy site, and establishing pneumoperito­neum. The mucocutaneous junction is resected, and a purse-string suture is performed on the colon opening and tied around the anvil of an end-to-end anastomosis stapler. The anvil is then delivered back into the abdominal cavity. The platform is secured in place at the former stoma site, and pneumoperitoneum (set to 15mmHg) is created. A 5mm or ideally a 10mm 30° laparoscopic camera is inserted through a trocar in the single-port plat­form, and the other trocars are then inserted under direct vision as shown in Fig.42.1. Usually, some degree of lysis of adhesions is necessary to allow for safe placement of trocars. Often, the camera trocar is placed more centrally and away from the instruments trocars to avoid interference with their movements. Alternatively, three trocars (or cannu­las) can be introduced through the exible single­port platform in the colostomy wound to perform a laparoscopic single-port abdominal dissection.
To allow for the performance of a tension-free anastomosis, a mobilization of the left colon is generally necessary. To gain signicant reach for the proximal colon, a splenic exure takedown is achieved if not previously done during the Hartmann’s procedure.
Then, attention is directed toward the pelvis. The rectal stump is often identied by blue poly­propylene tag sutures placed during the Hartmann’s procedure. If the rectal stump is long and easily identiable, proceeding with a laparoscopic- only HR is recommended. If the rectal stump is short or there are many adhesions in the pelvis, the tech­nique of taHR can be utilized.
taHR: Transanal Aspects
The transanal steps of taHR are similar to the ones of a taTME.The main differences are that with taHR, less importance is given to obtaining a total mesorectal excision. In addition, the purse­string suture to occlude the lumen prior to the rectotomy with taTME is a step that may be omit­ted during taHR.
Thus, the rst step for the transanal portion of taHR is the positioning of the transanal platform. We favor a exible (TAMIS) platform (Gelpoint Path Transanal Access Platform; Applied Medical Inc., Rancho Santa Margarita, CA) over a rigid TEM platform (Fig.42.2). Then, we evaluate the rectal stump under direct vision, looking for the best suitable place for the anastomosis. Often, it is
Fig. 42.1 Proposed single-port platform and trocars placement
Fig. 42.2 Transanal exible platform with an anal retractor