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Try out PMC Labs and tell us what you think. Learn More. Commonly included in this group of cancers are Bowen's disease intraepithelial squamous cell cancerperianal t's disease intraepithelial adenocarcinomainvasive squamous cell cancer, basal cell cancer, and malignant melanoma.

Buschke-Lowenstein tumor, or giant condyloma acuminatum, is not always included because this lesion is technically benign, although it displays aggressive local invasive behavior that makes it difficult to manage.

Complaints are usually nonspecific, such as itching or burning, bleeding, pain, drainage, or a mass. Proper diagnosis requires a high index of suspicion on the part of the surgeon. Innocent local irritations will resolve in a short time with appropriate therapy; those that persist must be biopsied for tissue diagnosis. Wide local excision is the mainstay of treatment for early stage tumors as it preserves continence and obtains adequate local control. Adjunct therapies have been utilized in more advanced or recurrent lesions, including radiotherapy, photodynamic therapy, and imiquimod.

All have met with a fair amount of success in controlling local disease; however, the of patients treated in each instance is small, making it difficult to de an evidence-based treatment strategy. Invasion and metastasis are relatively rare in this group of neoplasms; perianal t's disease has the highest risk of associated underlying neoplasm. The most important consideration in developing a treatment strategy is which strategy would achieve the best clinical result with the least morbidity to the patient.

This article will discuss all of these excepting malignant melanoma, which is discussed elsewhere in this journal as well as Buschke-Lowenstein tumor or verrucous carcinoma. Patients with these lesions often present with common perianal complaints, such as itching or burning, bleeding, pain, drainage, or a mass.

Any person with persistent complaints of a local rash or chronic irritation can be considered at risk until proven otherwise. Less concerning are symptoms of relatively short duration and symmetrical rashes; however, all patients should be scheduled for follow-up visit within 4 to 6 weeks.

Innocent local irritations will resolve in that time with appropriate therapy; those that persist must be biopsied for tissue diagnosis. Anal margin cancers are less common than carcinomas of the anal canal and have a more favorable prognosis. The distinction between SCCA of the anal margin and anal canal has important implications for prognosis and management. Squamous cell cancers in the anal margin and perianal skin are generally treated as SCCA elsewhere in the body.

Tumors of the anal margin drain primarily to the inguinal nodes leading to external and common iliac nodal regions. There is often a delay in diagnosis of anal margin cancers due to the location and nonspecific quality of symptoms. The duration of symptoms prior to diagnosis ranges from 2 to 60 months. Presenting symptoms can include I need a Springfield deep in my ass painful mass, bleeding, pruritus, tenesmus, discharge, or a change in bowel habits.

Physical examination should include visual inspection, digital exam, anoscopy, and examination of inguinal lymph nodes. The SCCA lesion usually has rolled, everted edges I need a Springfield deep in my ass an ulcerated center.

There may be a palpable component within the subcutaneous tissues. The anal canal may become involved late in the disease, although the sphincter complex is rarely invaded. Excisional biopsies, however, should only be performed when it is clear that adequate margins can be achieved.

Although these tumors are typically well differentiated and slow growing, pretreatment evaluation of a patient with SCCA of the anal margin should include a full staging workup. Staging of anal margin SCCA is based on the size of the primary tumor and lymph node involvement. Physical examination is the key component in evaluating the primary tumor. The tumor size, differentiation, and invasion of extradermal structures are all important for staging and prognosis. Studies have correlated tumor size with prognosis and found lymph node involvement to be an adverse prognostic factor. A chest x-ray should also be performed to rule out metastatic disease to the lung.

The goal of all treatment options for anal margin SCCA is to cure the patient while achieving the best functional result. The choice of treatment depends on several factors including the stage of the tumor, the anticipated functional result, and the risk of complications. A V-Y advancement flap encompassing skin and subcutaneous fat can generally be used by the colorectal surgeon with good Figs.

Larger defects may require the assistance of a plastic surgeon for closure. Inguinal node dissection is performed only for clinically positive nodes. Perianal squamous cell carcinoma—outline of area of resection with v-y advancement flap for closure. Introduced in the early s, radiation therapy has become the mainstay of treatment for SCCA of the anal canal. It is also currently being applied to SCCA of the anal margin with favorable.

Patients with T1 and early T2 tumors may be treated with either radiation therapy or primary surgical treatment achieving similar local control rates. Perineal and inguinal fields are often employed, even in the absence of clinically positive groin nodes. Elective inguinal node radiation was performed in 18 of 19 patients, and the patient not receiving elective groin radiation subsequently died with regional and distant disease. However, with radiation alone, local control was reached in Patients who develop recurrence after radiation therapy or chemoradiation may also undergo salvage surgery for cure.

Weighing the effectiveness of a treatment option with its risks to each individual patient is an important factor in determining the most appropriate plan for treatment. For T1 tumors that do not involve the sphincters, wide local excision may be a better choice than radiation due to the decreased morbidity and time spent in treatment even though radiation provides similar control and survival.

Due to the ificant risk of recurrence and lymph node metastases, radiation to the primary lesion and inguinal fields decreases the morbidity to the patient while achieving similar control rates compared with surgical therapy for T2 lesions. T3 and T4 tumors should be treated with radiation to the primary lesion as well as inguinal and pelvic nodal basins. Due to the risk of local recurrence as well as distant disease, it is essential that patients be closely followed for several years.

It is recommended that a full anorectal and nodal examination be performed every 3 months for the first 2 years after treatment and then every 6 months until year 5. Specific follow-up recommendations vary among surgeons, dermatologists, and primary care physicians; however, routine physical examination for 2 years after treatment is generally accepted. Some physicians may recommend regular follow-up for 5 years although the risk of local recurrence is greatest within 2 years.

Radiation, chronic irritation or infection, trauma, or burns may play a particular role in the development of perianal BCC, 612 which has been known to arise in longstanding anal fistula tracts. On examination, BCCs generally have raised edges with a central ulceration I need a Springfield deep in my ass are typically superficial and mobile with little metastatic potential. Treatment depends on the size of the tumor and the extent of invasion.

Larger lesions that do not extend into the anal canal may require primary excision in combination with skin grafting or flap to aid with closure. Perianal t's is quite uncommon, with only cases reported in the literature from to It is most commonly found in older patients average age 66 yearsshows a preponderance for women, and is often initially confused with benign conditions, which can lead to a delay in diagnosis.

Perianal t's should be considered in patients who present with perianal itching or rash refractory to local therapy. There may also be drainage, bleeding, or pain. Lesions are usually erythematous and crusty, eczematoid, or scaly-appearing. Differential diagnosis includes leukoplakia, Bowen's disease, melanoma, basal and squamous cell carcinoma, condylomata acuminata, dermatitis, eczema, and psoriasis. Full-thickness biopsies of the affected anal margin skin must be obtained. Perianal mapping biopsies should be obtained; the accepted method is described in the section on Bowen's disease.

Microscopic examination of perianal skin affected by t's disease will show classic t cells, which appear as large rounded cells with pale vacuolated cytoplasm and hyperchromatic eccentric nuclei. After exclusion of other potential perianal diseases and proper diagnosis of perianal t's disease on a histologic basis, treatment is essentially surgical in nature.

However, prior to proceeding with local treatment exclusion of an associated underlying malignancy is obligatory. Mammary t's is generally associated with underlying ductal carcinoma. In contrast, extramammary disease is associated with an underlying neoplasm in a ificant percentage of cases. If the disease appears to be locally confined on preoperative workup and is noninvasive on biopsy, wide local excision is the treatment of choice.

As traditional frozen section without histochemical staining may show falsely negativeperianal mapping biopsies should be done several days before definitive treatment. If an associated malignancy of the anorectum is detected on preoperative workup, an APR is the procedure of choice to treat the anorectal cancer with the addition of wide local excision to treat the cutaneous t's disease 20 Table 2. More advanced tumors may benefit from preoperative radiation or chemoradiation therapy; however the use of these modalities in the treatment of perianal t's remains controversial.

Although primary closure of the resulting defect after wide local excision is often possible, several methods have been described to provide coverage for defects too large for primary closure including myocutaneous flaps, rotational or advancement skin flaps, as well as skin grafting. In general, defects involving more than half the circumference of the anus or those with a radius of more than 3 cm should be considered for diversion. Proximal diversion can lower rates of wound infection, which may result in higher incidences of dehiscence, prolonged recovery, and ultimately poor functional outcome, especially for larger flaps.

Several noninvasive modalities have been proposed as well for the treatment of perianal t's disease including radiation therapy, chemotherapy, photodynamic therapy, and topical imiquimod. Unfortunately, because the of patients in these reports is quite small, it is difficult to objectively compare these modalities, and they are often reserved for medically high-risk patients or those who refuse to undergo more radical therapy. Patients who present with a more advanced stage of perianal t's disease tend to have a worse prognosis than patients in whom disease is confined to the epidermis.

Wolfgang et al also recommend a CT scan every 1 to 2 years. Bowen's disease BD is a nonkeratinizing, intraepithelial squamous-cell carcinoma of the perianal skin. It is characterized by marked epidermal hyperplasia and thickening of the rete ridges. The entire thickness of the squamous epithelium is disorganized with hyperchromatic large squamous cells extending from the base to the surface of the epithelium. BD in the perianal region can be asymptomatic or symptomatic at presentation. s and symptoms are usually nonspecific and include pruritus, bleeding, discharge, and presence or sensation of a perianal lump or lesion.

The relationship between anal intraepithelial neoplasia AIN is not clearly defined in the literature. Since its original description by John T. Bowen inover cases have been reported in the literature with the largest reported series being of 47 patients from the Cleveland Clinic managed between and However wide surgical excision of all involved perianal skin and subcutaneous tissue is currently considered the standard surgical treatment. Wide local excision is performed on the basis of intraoperative, systematic, four-quadrant biopsy specimens that are sent for immediate frozen section evaluation.

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