Добавил:
kiopkiopkiop18@yandex.ru t.me/Prokururor I Вовсе не секретарь, но почту проверяю Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_837_Библиотеки_им_академика_М_И_Перельмана.pdf
Скачиваний:
0
Добавлен:
31.08.2026
Размер:
38 Мб
Скачать
18 Anal Conditions: External Hemorrhoids
149
for ofce-based procedures such as banding for external hemorrhoids. Excisional hem­orrhoidectomy or excision of anal skin tags should be performed in the operating room. An honest conversation regarding the post­operative pain and potential complications including damage to sphincter muscles or anal stricture or recurrent skin tags is nec­essary before the patient should agree to surgery. Also, if the patient’s symptoms do not correlate with your exam ndings, be wary about improving their symptoms with surgery and look for other causes. Excisional hemorrhoidectomy can be per­formed under general anesthesia or with a spinal block. This procedure should be per­formed in prone position. Sharp dissection, cautery, or advanced energy devices can be utilized for excision and these wounds can
be closed or left open to heal by secondary intention. Postoperative pain control is improved with the use of long-acting local anesthetic and vigilant bowel regimen.

Suggested Reading

Hall JF. Modern management of hemorrhoidal disease.
Gastroenterol Clin N Am. 2013;42(4):759–72.
Khubchandani I, Paonessa N, Khawaja A. Surgical treat-
ment of hemorrhoids. London: Springer Verlag; 2009.
Lohsiriwat V. Treatment of hemorrhoids: a colo-
proctologist’s view. World J Gastroenterol. 2015;21(31):9245–52.
Rivadeneira D, Steele S, Ternent C, Chalasani S, Buie D,
Rafferty J. Practice parameters for the management of hemorrhoids (revised 2010). Dis Colon Rectum. 2011;54(9):1059–64.
Sanchez C, Chinn B. Hemorrhoids. Clin Colon Rectal
Surg. 2011;24(1):5–13.
Anal Conditions: Pilonidal Disease/ Complex andRecurrent Pilonidal Disease
RichardS.Hoehn andIanM.Paquette
19

Refer to Algorithm in Fig. 19.1

A.History andPresentation
Pilonidal disease affects 0.7% of the population, usually between the ages of 15 and 30, and is twice as common in men than women. Risk fac­tors include having thick or hairy skin, increased sweating, a deep gluteal cleft, poor hygiene, obesity, and prolonged periods of sitting. It is generally accepted that this disease originates from traumatization of hair follicles in the natal cleft which leads to inammation and a granulo­matous foreign body-type reaction, which is exacerbated by the warm, moist, high-friction environment of this region. These conditions can lead to formation of an abscess or stulous tracts. Clinical presentation is quite varied and can range from the presence of asymptomatic midline pits noted on physical examination to a complex network of draining sinus tracts, which can result in a debilitating decrease in quality of life. The most common initial presentation is pain and intermittent discharge, occasionally
R. S. Hoehn Department ofSurgery, University ofCincinnati, Cincinnati, OH, USA
I. M. Paquette (*) Division ofColon andRectal Surgery, Department ofSurgery, University ofCincinnati Medical Center, Cincinnati, OH, USA e-mail: paquetin@UCMAIL.UC.EDU
with bleeding, from one, or many sinus tracts in the gluteal cleft.
B.Physical Examination
Diagnosis of pilonidal disease is straightforward and requires no imaging or testing. Physical examination will reveal one or several pits in the midline gluteal cleft. Patients may present with an acute abscess or a chronically draining sinus (Fig. 19.2). When present, abscesses in this region tend to present lateral to the midline (Fig.19.3). The pilonidal cyst or sinus is usually found near midline at the top of the gluteal cleft, approximately 4–10 cm from the anus. The infected sinus is usually accompanied by other pits that communicate with the deeper cavity by an epithelized tract. It is important to differenti­ate pilonidal disease from other diagnoses such as hidradenitis suppurativa, Crohn’s disease, perianal stula, and other infectious processes. One major difculty is assessing the degree of active disease below the skin. A common situa­tion encountered is that the degree of extension under the skin can be much more extensive than it may appear based upon examination in the ofce. The surgeon must be aware of this possi­bility if operative intervention is to be offered.
Patients may also present with chronic pilonidal disease with a range of severity. Some patients have minimally symptomatic sinus tracts that may be treated with hair removal and potentially phenol
© Springer Nature Switzerland AG 2020 S. R. Steele etal. (eds.), Clinical Decision Making in Colorectal Surgery,
https://doi.org/10.1007/978-3-319-65942-8_19
151
152
R. S. Hoehn and I. M. Paquette
A. History
and
presentation
B. Physical
exam
Fig. 19.1 Algorithm for treatment of pilonidal disease
Pilonidal
disease without
abscess
Aute pilonidal
abscess
Minimally
symptomatic
Symptomatic
Recurrent
disease
C. Incision
and drainage
D. Hair removal
E. Phenol injection
F. Excision and primary repair
G. Excision healing
by secondary
intention
H. Flap-based
procedures
injection. Some patients have chronic and symp­tomatic disease that requires excision with healing by primary intention, secondary intention, or a cer­tain ap-based procedures if a deep cleft is found (cleft lift or Karydakis, below). These patients would benet from hair removal as well (Fig.19.3).
C.Incision andDrainage Only
For acute presentations with an abscess, whether primary or recurrent, incision and drainage is indicated. Using local anesthesia, a 1cm cruciate incision is made close to midline and skin aps are excised. Drainage is performed lateral to the midline. Drains or packing are not routinely indi­cated, and current literature does not support the use of antibiotics. Incision and drainage alone has a recurrence rate of >40%. Based upon the relatively high recurrence rate, patients are offered options including expectant follow-up,
hair removal, or elective excision. Shaving of the area along with careful attention to hygiene may be benecial in preventing recurrences.
D.Hair Removal
As pilonidal disease likely develops from hair follicle ingrowth, hair removal techniques have been shown to reduce the need for surgical intervention as well as disease recurrence when used either as an adjunct to surgical manage­ment. Therefore, hair removal can be consid­ered for all patients presenting with current or past symptomatic pilonidal disease. Shaving has been the preferred treatment modality, and while laser hair removal has garnered much interest, data supporting this technique are insufcient to support routine use. This should be performed in conjunction with meticulous hygiene.
ab
19 Anal Conditions: Pilonidal Disease/Complex andRecurrent Pilonidal Disease
153
c
Fig. 19.2 Patient presenting with chronic pilonidal sinus in the gluteal cleft (With permission from Johnson EK.Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull
E.Phenol Injection
Phenol injection is a potential non-operative adjunct to treatment that is less commonly used. To whatever extent possible, tracts should be debrided free of any excess hair or debris and curetted to remove excessive granulation tissue. Under a local anesthetic block, the injection of 1–2 mL of 80% phenol solution
TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, edi­tors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, NewYork; 2016:pp: 289–307 © Springer)
causes epithelial destruction and intense inammation that has a 60–95% success rate at closing pilonidal tracts. This therapy induces signicant discomfort and may require inpa­tient admission for pain control. This treatment is best reserved for patients with limited sinus tracts and mild to moderate symptoms from their pilonidal disease.
154
Fig. 19.3 Pilonidal abscess presenting to the left of the mid­line (With permission from Johnson EK.Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, NewYork; 2016:pp: 289–307. © Springer)
F.Excision andPrimary Repair
Patients with chronic, symptomatic pilonidal disease may benet from excision of the dis­eased tissue. Excision of the pilonidal abscess and tracts followed by primary surgical repair has led to faster healing rates than healing by secondary intention in multiple prospective, randomized trials. However, primary closure may be associated with increased rates of recur­rent disease. When primarily closing wounds in this area it is important to leave the surgical wound off the midline. Additionally, it is impor­tant to excise only the tissue involved with the sinus tracts rather than excising down to the fascia, encompassing large amounts of normal tissue. This unnecessary step creates a large deadspace and leads to complications in heal­ing. Midline surgical wounds, and large volume excisions, have been independently associated with delayed wound healing following primary closure. A meta-analysis found that off-midline closures had a lower failure rate (3–5% versus
R. S. Hoehn and I. M. Paquette
9%) and recurrence rate (1–3% versus 9.5%) compared to midline closure. Drain placement in this setting has demonstrated improved heal­ing with no effect on disease recurrence, though it is only like necessary in the setting of a larger volume excision leaving signicant deadspace. In scenarios with smaller volume excisions, a layered primary closure will sufce.
G.Excision andHealing by Secondary Intention
For patients with a substantial excision, or those who have failed primary closure, excision and healing with secondary intention is a potential next step. For acute or recurrent disease, curet­tage of the abscess cavity may improve healing and lower recurrence rates. It is important to adhere to sound principles when performing this procedure. The goals are to eradicate the subcu­taneous sinus tracts and remove any excessive granulation tissue and debris. Opening the tracts over a stula probe and injection of small quan­tities of methylene blue into the tracts can be helpful adjuncts to achieving these goals. If these principles are adhered to, the disease can often be excised without creating excessively large soft tissue defects. Marsupialization of the wound edges may reduce the wound to a more manageable size and precipitate quicker heal­ing. In the event of a larger excision, negative pressure wound therapy has shown promise as an adjunctive treatment for complex, recurrent pilonidal disease, but current literature has yet to dene a clear role for this therapy. If this type of procedure is planned, the patient must be counseled on the expected prolonged period of time to achieve complete healing.
H.Flap-Based Procedures
For patients with complex pilonidal disease or recurrent disease following basic excision and closure, ap-based closure should be considered. There are multiple ap procedures, each with a recurrence rate of <10%.
19 Anal Conditions: Pilonidal Disease/Complex andRecurrent Pilonidal Disease
155
Fig. 19.4 The Bascom or cleft-lift technique starts with marking a “safe zone” prior to surgery (With permission from Johnson EK. Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, NewYork; 2016:pp: 289–307. © Springer)
Cleft elevating procedures such as the Karydakis and Bascom procedures, can be con­sidered as rst-line surgical treatment for indi­viduals with a very deep gluteal cleft, or in cases of recurrent pilonidal disease. The technical challenge lies in elevating the distal most aspect of the gluteal cleft, and the incision is often curved in the inferior location to account for this. Groups have published very low complica­tion and recurrence rates with each technique, and practitioners should choose a technique based on experience and comfort with the procedure.
The Karydakis ap involves a midline exci­sion of the pilonidal tracts and diseased tissue with creation of an elliptical defect. The exci­sion favors the more diseased side, with preser­vation of normal tissue on the contralateral side to use as a ap. Next, a beveled ap is created from the more medial tissue and is sutured later-
Fig. 19.5 To help rotate the distal portion of the wound to a lateral position, a scimitar shape is used on the distal inci­sion (With permission from Johnson EK.Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, NewYork; 2016:pp: 289–307. © Springer)
ally to the sacrococcygeal fascia to avoid mid­line tension, followed by an off-midline skin closure. This technique has a wound complica­tion rate of 8% and recurrence rate of 2%. Advantages include a tension- free closure that is off-midline as well as attening of the natal cleft. It is also one of the easier ap procedures to perform.
The Bascom or cleft-lift technique is a sim­ple but intricate procedure that is designed to lift the natal cleft and provide an off- midline clo­sure. Prior to surgery, a “safe zone” is marked on the skin to indicate the limits of dissection (Fig.19.4). The buttocks are taped apart and a triangular incision is made with the apex above and lateral to the cleft. The distal portion of the incision is scimitar shaped in order to facilitate closure near the anus (Fig. 19.5). The ap is
156
R. S. Hoehn and I. M. Paquette
Fig. 19.6 The Limberg or rhomboid ap involves exci­sion of all diseased tissue in the midline in a diamond- or rhomboid-shaped block (With permission from Johnson EK.Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, New York; 2016:pp: 289-307. © Springer)
raised with care to leave the subcutaneous fat in place. The skin ap is excised, hair and granula­tion tissue debrided, and the ap is sutured over a drain. Recurrence rates are around 4%. This procedure is not ideal for patients with complex recurrent disease, large wounds, and disease close to the anus.
Rotational aps are more involved procedures and generally second-line therapy for patients with multiple-recurrent or very extensive disease.
The Limberg or rhomboid ap involves mid­line excision of the pilonidal disease, with a dia­mond- or rhomboid-shaped incision, (Fig.19.6) down to the presacral fascia and rotational fascio­cutaneous coverage. The ap must be of the same thickness as the excised tissue, and closure is with layered absorbable sutures and closed-suc­tion drain (Fig.19.7). Recurrence rates with this procedure are 0–6%, the same as the wound com­plication rates, which may include hematoma or seroma formation as well as areas of minor wound separation due to tension closure. This is a preferred procedure in the setting of complex recurrent disease. However, due to the complex-
Fig. 19.7 Completed Limberg ap (With permission from Johnson EK. Pilonidal Disease and Hidradenitis Suppurativa. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS Textbook of Colon and Rectal Surgery, 3rd ed. Springer, NewYork; 2016:pp: 289–307. © Springer)
ity of the procedure, a surgeon must either have extensive experience with this technique, or col­laborate with a plastic surgeon who is well versed in this technique. The V-Y advancement ap and the Z-plasty, both of which report >90% healing and low disease recurrence, are other closure options for wide excision of complex disease. However, the V-Y ap uses a midline closure, often over a drain, and both are considered infe­rior to the above techniques.

Suggested Reading

de Parades V, Bouchard D, Janier M, Berger A.
Pilonidal sinus disease. J Visc Surg. 2013;150(4): 237–47.
Farrell D, Murphy S. Negative pressure wound ther-
apy for recurrent pilonidal disease: a review of the literature. J Wound Ostomy Continence Nurs. 2011;38(4):373–8.
Harris CL, Laforet K, Sibbald RG, Bishop R. Twelve
common mistakes in pilonidal sinus care. Adv Skin Wound Care. 2012;25(7):324–32; quiz 33–4
Humphries AE, Duncan JE. Evaluation and manage-
ment of pilonidal disease. Surg Clin North Am. 2010;90(1):113–24, Table of Contents
19 Anal Conditions: Pilonidal Disease/Complex andRecurrent Pilonidal Disease
157
Johnson EK.Pilonidal disease and hidradenitis suppura-
tiva. In: Steele SR, Hull TL, Read TE, Saclarides TJ, Senagore AJ, Whitlow CB, editors. The ASCRS text­book of colon and rectal surgery. 3rd ed. NewYork: Springer International Publishing; 2016.
Mavros MN, Mitsikostas PK, Alexiou VG, Peppas G,
Falagas ME.Antimicrobials as an adjunct to pilonidal disease surgery: a systematic review of the literature. Eur J Clin Microbiol Infect Dis. 2013;32(7):851–8.
Steele SR, Perry WB, Mills S, Buie WD, Surgeons
SPTFotASoCaR. Practice parameters for the man­agement of pilonidal disease. Dis Colon Rectum. 2013;56(9):1021–7.
Vahedian J, Nabavizadeh F, Nakhaee N, Vahedian M,
Sadeghpour A. Comparison between drainage and curettage in the treatment of acute pilonidal abscess. Saudi Med J. 2005;26(4):553–5.

Anal Conditions: Pruritus Ani

BrianL.Bello andKonstantinUmanskiy
20
Refer to Algorithm in Fig.20.1
A. The urge to itch in pruritus ani is mediated by
the extensive, unmyelinated C-bers that are predominant in the anoderm and perianal skin. Stimulation of these bers leads to scratching and frequent wiping in order to relieve the urge. This often contributes to excoriation and cutaneous injury, which causes additional stimulation of the C-bers, inciting more itching and scratching. This may ultimately lead to a self-defeating vicious cycle (Fig. 20.2). Pruritus ani is reported to affect up to 5% of the population. The condition is more common in men than women with a 2:1 ratio. It is usually seen in older adults but can affect people of any age. Refractory cases have been described and can lead to severe physical and emotional distress.
B. A thorough history must be obtained as this
often gives clues as to the likely cause of itching. Specic aspects of the history should include the following:
B. L. Bello Department ofColorectal Surgery Program, MedStar Washington Hospital Center, Washington, DC, USA
K. Umanskiy (*) Department ofSurgery, University ofChicago, Chicago, IL, USA e-mail: kumanskiy@surgery.bsd.uchicago.edu
• Bowel habit: frequency, constipation, incomplete evacuation, diarrhea, seepage, stool consistency, change in stool caliber.
• Diet: coffee, chocolate, spicy foods, dairy, citrus, tomatoes; request food journal.
• Toileting behavior and hygiene: time on toilet, straining, types of wipes, method of wiping, cleansing agents.
• Local irritants: creams, wipes, undergar­ments tight-tting or synthetic material undergarments, anal moisture.
• Systemic signs: abdominal pain, weight loss, fevers, fatigue.
• Past medical history: diabetes, dermato­logic conditions, malignancy, sexual prac­tices, gastrointestinal disorders, radiation, sexually transmitted diseases, previous anorectal surgery.
A careful external evaluation should be performed noting the severity and extent of any inammation or skin changes. Masses, irregularity, and induration should be assessed by digital anorectal examination. Anoscopy may reveal abnor­malities in the anal and distal rectal mucosa and help to identify or exclude anorectal causes of itching, including hemorrhoids, anal ssure, and stula-in­ano. While there is no specic diagnostic laboratory test for pruritus ani, an HIV test can be benecial and a CBC may sug­gest an infectious or malignant process.
© Springer Nature Switzerland AG 2020 S. R. Steele etal. (eds.), Clinical Decision Making in Colorectal Surgery,
https://doi.org/10.1007/978-3-319-65942-8_20
159
160
B. L. Bello and K. Umanskiy
Fig. 20.1 Algorithm for diagnosis and treatment of pruritus ani
C. Biopsy is an indispensable modality for evalua-
Stimulation
of C-fibers
Scratching, Wiping
D. In up to 75% of cases of pruritus ani, an identi-
Itching, Irritation
Fig. 20.2 Pruritus ani: a vicious cycle
Cutaneous injury
tion of anal itching. Any abnormal appearing lesion or perianal skin changes should be biop­sied. This can easily be done in the ofce set­ting with local anesthetic and a 15-blade scalpel or punch biopsy. Endoscopy is a useful adjunct to perianal biopsy and should be performed to rule out malignancy especially if the patient is older or has concerning symptoms such as abdominal pain, weight loss, change in bowel movements, or blood in the stool.
able etiology can be found. While there are dozens of conditions associated with anal itch­ing, most of them can be classied as infec­tious, dermatologic, systemic, local irritants, or colorectal- and anal-specic causes (Fig.20.1). Here, we will review the most common causes.