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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_832_Библиотеки_им_академика_М_И_Перельмана

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Laparoscopic Adrenalectomy:
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Retroperitoneal Approach
CameronD.Adkisson andLinwahYip
1 Introduction
Laparoscopic adrenalectomy has become the gold standard for removal of non­malignant tumors of the adrenal gland since its introduction by Gagner in 1992 [13]. Advantages of the laparoscopic approach include decreased pain and expe­dited recovery. Indications for adrenalectomy have been reviewed elsewhere and include either the presence of a functional tumor of the adrenal cortex or medulla, or clinical concern for malignancy such as an adrenal nodule that demonstrates interval growth, is 4cm in size, or has concerning features on imaging. Isolated metastatic disease in patients who may benet from metastasectomy is a less com­mon indication for adrenalectomy.
Posterior retroperitoneoscopic adrenalectomy is an alternative approach to total or partial adrenalectomy, and has demonstrated utility, safety and efcacy in a variety of adrenal tumors including aldosteronomas, cortisol-secreting tumors, pheochromocytomas, virilizing tumors, benign adenomas, angiomyolipomas, ganglioneuromas, and adrenal metastases [46]. First reported in 1995 by Mercan etal., the posterior retroperitoneoscopic approach was not widely adopted until the necessary increased insufation pressures for improved visualization were
C. D. Adkisson Division of Endocrine Surgery, Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
L. Yip (*) Division of Endocrine Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA e-mail: yipl@upmc.edu
Switzerland AG 2024 H. Chen, B. Lindeman (eds.), Illustrative Handbook of General Surgery,
https://doi.org/10.1007/978-3-031-63878-7_9
79© The Author(s), under exclusive license to Springer Nature
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C. D. Adkisson and L. Yip
deemed safe for patients [7]. Giebler et al. clearly demonstrated that impaired cardiac lling occurred only when peritoneal insufation pressures exceeded 15mmHg, but did not occur when retroperitoneal insufation pressures exceeded 15mmHg [8].
The retroperitoneoscopic approach to the adrenal gland offers distinct advan­tages to the transperitoneal approach including direct exposure of the adrenal gland and adrenal vein, avoidance of intraabdominal adhesions, and avoiding the need for adjacent organ displacement including the spleen, colon, and liver. Finally, bilateral adrenalectomies for ACTH-dependent Cushing’s or familial pheochromocytoma can be performed through a retroperitoneal approach without patient repositioning. Walz etal. described 560 adrenalectomies in 520 patients utilizing the retroperito­neoscopic approach during a 12year period with no reported mortalities, a major complication such as myocardial infarction, bleeding requiring transfusion, and pneumonia occurring in 1.3%, and a conversion rate to open or lateral approach of only 1.7% [4]. Furthermore, they observed improved operative efciency with cases performed at a mean of 40min by the end of their study period [4]. The retroperito­neoscopic approach should be used with caution in patients with (1) severe lung disease or COPD, (2) inadequate working space determined by the distance from the posterior 12th rib margin to the superior border of the iliac crest, (3) suspected adrenocortical cancer or suspected invasion into surrounding structures, (4) inabil­ity to tolerated the prone positioning, and (5) high BMI (i.e. > 45). Larger adrenals 6 cm should also be approached with caution through a retroperitoneoscopic approach as the malignancy rate is higher and the ability to manipulate large tumors in the retroperitoneal space is limited. Choice of operative approach should be guided by surgeon, patient, and tumor specic variables [6].
Other groups have described their successful experience with the posterior approach as well. In Perrier etal. 68 patients had retroperitoneoscopic adrenalec­tomy with a low conversion rate of 9%, a mean operating time of 121min, and no mortalities [5]. The feasibility and safety of the procedure in obese patients (BMI 30) has been reported with decreased operative time and blood loss for retroperi­toneoscopic compared to transperitoneal adrenalectomy [9]. Partial or cortical­sparing adrenalectomy is also feasible and safe through the retroperitoneoscopic approach [10, 11]. In a large retrospective cohort analysis of surgical registry data comparing adrenalectomy by the laparoscopic transperitoneal approach (n=1696 patients) to the retroperitoneoscopic approach (n=964), there were no differences in conversion rates to open, morbidity, wound complications, reoperation, or read­mission rates between the 2 groups. Length of hospital stay was shorter with the retroperitoneal approach [12]. Similar ndings were seen in a meta-analysis com­paring 12 studies and 775 patients and in addition to shorter length of hospital stay, less blood loss and shorter time to oral intake was associated with the retroperito­neoscopic compared to the laparoscopic transperitoneal adrenalectomy, with no dif­ferences identied in the rates of major complications, operative time, or conversion to open [13].
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2 Preoperative Preparation
The pre-operative planning for patients having retroperitoneoscopic adrenalectomy is the same as that for the transperitoneal approach [6]. Prior to surgery, the planned approach and tumor functional status is discussed with the anesthesia and operating room teams. An operating room table is ready and available immediately outside the operative suite during all retroperitoneoscopic adrenalectomies in preparation for emergent open laparotomy if necessary.
3 Description ofProcedure
3.1 Positioning
Retroperitoneal adrenalectomy can be performed either using robotic-assistance or laparoscopically [14]; the following will focus on the laparoscopic approach. Similar to preparing for laparoscopic transperitoneal adrenalectomy, patient posi­tioning can sometimes be difcult and time-consuming. While the patient is supine on the transporting gurney, general anesthesia with endotracheal intubation, foley catheter and needed IV access including central and arterial lines are placed before prone positioning on the operating table. We frequently inform anesthesia about the potential for CO2 retention and request mild hyperventilation after intubation to decrease CO2 levels before positioning. This is particularly helpful in obese patients or those with COPD as they can have a higher degree of CO2 retention which may cause challenges with intraoperative hemodynamic instability and extubation. The patient is then rotated into a prone jackknife position. We use a modied table with a thin gel pad placed in the lower ½ of the bed instead of the typical operating table padding, and large gel rolls that are positioned under the breasts and across the pubic symphysis to maximize the working space which is dened as the 12th rib posteriorly to the superior border of the iliac crest on the ipsilateral side (Fig.1).
Fig. 1 Operating table modied to facilitate retroperitoneal approach
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The goal of padding placement is to allow the ventral abdominal wall to hang freely anteriorly. A Cloward table saddle can also be used. The patient’s arms are extended to 90° and placed on arms rests with padding in an ergonomic position to ensure no tension on the shoulders or pressure on the cubital tunnel. Manipulation of the surgi­cal table with Trendelenburg positioning and exing the hips to approximately 90° further maximizes the working space. The patient’s legs are positioned without pressure on the knees to avoid hip displacement. Two high-denition monitors are placed on either side of the operating table. The ank is then prepared using chlorhexidine or betadine, and draped with blue towels and standard operating sheets from the lower border of the shoulder blades as far laterally as possible to the medial portion of the gluteus maximus inferiorly.
C. D. Adkisson and L. Yip
3.2 Required Equipment
• Ports:
– 5mm bladeless trocar × 2 – 10mm disposable Balloon trocar (Autosuture) – 5mm bladeless trocar × 1 (optional)
• Laparoscopic cameras:
– 10mm 30° scope – 5mm 30° scope – 5mm 45° scope (optional)
• Other Instruments:
– 5 mm LigaSure™ (Covidien Ltd, Manseld, MA) or Harmonic Ultrasound
Device® (Ethicon Endo-Surgery, Inc) – Laparoscopic Suction/Irrigation – Laparoscopic blunt grasper – Laparoscopic peanuts – EndoCatch™ (Covidien Ltd, Manseld, MA) for specimen extraction
3.3 Insufation
20–24mmHg CO2.
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3.4 Port Placement
An initial 1.5–2cm incision is made just beneath the tip of the 12th rib transversely and will be used for initial camera placement and specimen extraction. Using a combination of sharp and blunt dissection, the retroperitoneal space is entered. Using the index nger to clear retroperitoneal fat off the postero-medial border (paraspinous musculature) enables creation of a working space. This dissection then is carried to the superior-most extent of the operator’s reach medially and inferiorly until enough working space is created for placement of the camera port and the two 5mm trocars. A 5mm trocar is then placed 4–5cm laterally and 2cm inferior to the tip of the 11th rib angled appropriately to avoid collision with the rib during instru­ment manipulation. We insert a nger through the initial incision to guide the trocar into the working space and clear any overlying retroperitoneal fat. A second 5mm trocar is placed at the medial border of the paraspinous muscles usually ~4 cm medial to the 10mm trocar and 3–4cm below the 12th rib angled to 45°. The bal­loon trocar is placed through the initial incision and CO2 insufation is achieved to 20–24mmHg. The surgeon and assistant typically stand on the ipsilateral side of the target gland.
4 Procedure
Using the 10mm 30° scope, additional working space in the retroperitoneum is rst created using two peanuts/graspers in a sweeping motion. The paraspinous muscle is an important landmark that allows for appropriate orientation in the retroperito­neum, and is rst identied and cleared as superiorly as possible towards the adre­nal. Starting medially will also prevent entry into the peritoneum which lies laterally and near the plane of dissection particularly in thin patients. Entering the perito­neum during the dissection is suboptimal as CO2 insufation into the peritoneal cavity can cause progressive reduction of the retroperitoneal working space as the peritoneal contents are displaced by the CO2. The superior border of the kidney is then identied as the retroperitoneal fat is swept away. The upper pole of the kidney is identied and Gerota’s fascia is sharply entered, aided by pushing the kidney down with the surgeon’s opposite hand exposing the adrenal gland. Freeing up the adrenal from the superior pole of the kidney is best accomplished at this point while the adrenal is still attached superiorly and medially. Rarely, if exposure is limited, a fourth 5mm trocar may be placed inferior to the lateral port to retract the kidney during dissection of the inferior portion of the adrenal gland.
During right adrenalectomy, the adrenal vascular supply is encountered posterior to the vena cava. Further dissection of the medial aspect of the adrenal gland facili­tates gentle lateral retraction of the gland and clear visualization of the IVC.The adrenal vein is then typically seen running posterior and lateral at 9–10 o’clock and may be clipped or doubly ligated with the coagulation device (Fig.2). During left
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Fig. 2 Intraoperative anatomy of right retroperitoneoscopic adrenalectomy. A adrenal gland, AV adrenal vein, k right kidney, VC inferior vena cava. (Image from Walz etal. [4], with permission from Elsevier)
Fig. 3 Intraoperative anatomy of left retroperitoneoscopic adrenalectomy. A adrenal gland with adenoma, AV adrenal vein, K left kidney. (Image from Walz etal. [4], with permission from Elsevier)
C. D. Adkisson and L. Yip
adrenalectomy the adrenal vein is encountered running medial to the upper pole of the kidney at approximately 4–5 o’clock and is clipped or doubly ligated with coag­ulation (Fig.3). An accessory renal artery may be present and is usually located in the 6 o’clock position, and should be preserved. On the left, there is often a limb of adrenal that extends anteriorly and medially into the renal hilum. Care should be taken not to inadvertently transect the adrenal at this location.
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Once the vein has been divided, dissection is then carried out laterally, leaving the superior attachments for last. The adrenal gland is then extracted through the 10mm port using an EndoCatch™ (Covidien Ltd, Manseld, MA). After extraction, the specimen is always inspected carefully on the back table to ensure that the adre­nal has been resected in total. The camera is then re-inserted to visualize the adrenal bed for both adequate hemostasis and ensure complete resection. The balloon trocar site fascia is then closed, port sites are reapproximated at the skin, and sterile dress­ing (either steristrips or surgical glue) is applied.
5 Postoperative Care
Subcutaneous crepitus may be evident but resolves rapidly. Standard management of incisional pain is administered. Patients are given clear liquids after operation and if well tolerated move quickly to regular diet. The majority of patients are dis­charged home on postoperative day 1 with follow up in 2–3weeks. Postoperative follow-up and medication continuation or discontinuation is based on the functional status of the lesion, and is similar to the approach after the laparoscopic transperito­neal approach. A multidisciplinary approach facilitates safe, timely discharge.
References
1. Gagner M, Lacroix A, Bolte E.Laparoscopic adrenalectomy in Cushing’s syndrome and pheo­chromocytoma. N Engl J Med. 1992;327:1033.
2. Schlinkert RT, van Heerden JA, Grant CS, etal. Laparoscopic left adrenalectomy for aldoster­onoma: early Mayo Clinic experience. Mayo Clin Proc. 1995;70:844–6.
3. Brunt LM.Minimal access adrenal surgery. Surg Endoscopy. 2006;20:351–61.
4. Walz MK, Alesin PF, Wenger FA, Deligiannis A, Szuczik E, etal. Posterior retroperitoneo­scopic adrenalectomy—results of 560 procedures in 520 patients. Surgery. 2006;140:943–50.
5. Perrier ND, Kannamer DL, Bao R, et al. Posterior retroperitoneoscopic adrenalectomy: preferred technique for removal of benign tumors and isolated metastases. Ann Surg. 2008;248:666–74.
6. Yip L, Duh QY, Wachtel H, etal. American Association of Endocrine Surgeons guidelines for adrenalectomy: executive summary. JAMA Surg. 2022;157:870–7.
7. Mercan S, Seven R, Ozarmagan S, etal. Endoscopic retroperitoneal adrenalectomy. Surgery. 1995;118:1071–5.
8. Giebler RM, Behrends M, Steffens T, etal. Intraperitoneal and retroperitoneal carbon dioxide insufations evoke difference effects on caval vein pressure gradients in humans: evidence for the starling resistor concept of abdominal venous return. Anesthesiology. 2000;92:1568–80.
9. Epelboym E, Digesu C, Johnston MG, etal. Expanding the indications for laparoscopic ret­roperitoneal adrenalectomy: experience with 81 resections. J Surg Res. 2014;187:496–501.
10. Walz MK, Peitgen K, Diesing D, et al. Partial versus total adrenalectomy by the posterior retroperitoneoscopic approach: early and long-term results of 325 consecutive procedures in primary adrenal neoplasias. World J Surg. 2004;28:1323–9.
11. Grubbs EG, Rich TA, Ng C, et al. Long-term outcomes of surgical treatment for hereditary pheochromocytoma. J Am Coll Surg. 2013;216:280–9.
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12. Van Den Heede K, Vatansever S, Girgin T, et al. Posterior retroperitoneal versus transperi­toneal laparoscopic adrenalectomy in adults: results from the EUROCINE surgical registry. Langenbecks Arch Surg. 2023;408:241.
13. Gavriilidis P, Camenzuli C, Paspala A, etal. Posterior retroperitoneoscopic versus laparo­scopic transperitoneal adrenalectomy: a systematic review by an updated meta-analysis. World J Surg. 2021;45:168–79.
14. Dickson PV, Alex GC, Grubbs EC, etal. Robotic-assisted retroperitoneoscopic adrenalectomy: making a good procedure even better. Am Surg. 2013;79:84–9.
C. D. Adkisson and L. Yip
Part II
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Breast Surgery
Breast Conservation Surgery
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AstridBottyvan den Bruele andLauraH.Rosenberger
1 Introduction
The historic Halstead radical mastectomy was the standard of care for many decades. William Halstead believed that breast cancer was a local disease at its onset and, therefore, the extent of local resection should impact survival [1]. However, about 60% of women continued to die due to breast cancer, which called into question the central dogma at the time. With this in mind, Bernard Fisher started the NSABP-04 trial, recognizing that perhaps breast cancer was not a local disease at its onset; perhaps it was systemic. The trial was designed to determine whether less extensive surgery (radical mastectomy vs. mastectomy alone) with or without radiation ther­apy (RT) was as effective as the Halstead mastectomy. At 25years of follow up, the data demonstrated no difference in disease free survival (DFS), recurrence free sur­vival (RFS), or overall survival (OS) when looking at the extent of local surgery within these groups [2]. The results of this trial not only challenged the approach to breast cancer treatment, but truly changed the surgical landscape as we know it today.
Beginning in the mid-1970s, subsequent randomized trials in both the United States and Europe began to emerge assessing whether excision of the cancer itself, while maintaining the remaining unaffected breast tissue (breast conservation sur­gery), was an oncologically reasonable alternative to mastectomy. The results of these trials demonstrated equivalence between mastectomy and breast conservation
A. B. van den Bruele (*) · L. H. Rosenberger Department of Surgery, Duke University Hosptial, Durham, NC, USA e-mail: ab958@duke.edu; astrid.botty.van.den.bruele@duke.edu;
laura.rosenberger@duke.edu
Switzerland AG 2024 H. Chen, B. Lindeman (eds.), Illustrative Handbook of General Surgery,
https://doi.org/10.1007/978-3-031-63878-7_10
89© The Author(s), under exclusive license to Springer Nature