Erratum to: One-level step section histological analysis is insufficient to confirm complete pathological response after neoadjuvant chemoradiation for rectal cancer.

Unfortunately, one of the author name was wrongly published in the original publication. The complete correct name should read as follows "Beatriz Camargo Azevedo". The original article was updated.

One-level step section histological analysis is insufficient to confirm complete pathological response after neoadjuvant chemoradiation for rectal cancer.

BACKGROUND: Neoadjuvant chemoradiation therapy (nCRT) for rectal cancer may lead to cure. As we currently lack reliable methods to clinically confirm the absence of disease, some patients undergo radical resection and have pathological complete response (pCR) still undergo surgery. Furthermore, it is uncertain if conventional one-level histopathological analysis is accurate enough to determine complete response. Confirming pCR is essential to determine the prognosis and to consider the patient's inclusion in trials of adjuvant therapy. The aim of this study was to determine whether the current 1-level approach is sufficient to confirm pCR. METHODS: Four hundred and thirty-five patients with rectal cancer who received nCRT followed by radical resection were analyzed. All cases identified as pCR by 1-level step section histological evaluation were reassessed with 3-level step sections and immunohistochemical analysis to verify the presence of residual disease. RESULTS: Out of 435 patients, 75 (17.2%) were staged as ypT0. Of these, 6 had lymph node involvement and 1 had distant metastasis, leaving 68 (15.6%) who had pCR. After the additional step sections, residual tumor was detected in 12 (17.6%) of these 68. The final pCR rate was 12.9%. Distant recurrence was detected in 7.1% of real-pCR patients compared to 16.7% in the false-pCR group (p = 0.291). Sensitivity of clinical assessment for detecting pCR was 35.7%, and the accuracy of 1-section histological evaluation to identify pCR was 82.4%. CONCLUSIONS: Histopathological analysis with 1-level step section is insufficient to determine complete tumor eradication. The 3-level sections methodology revealed residual tumor cells in patients initially classified as ypT0. Further studies with larger sample size are required to verify the clinical relevance of these residual tumor cells. Caution should continue to be applied to watch and wait strategies following nCRT.

Orifice Diseases Project--experience of the "Hospital das Clínicas" University of São Paulo Medical Center in day-hospital of anorectal disease.

The treatment of malignant or benign colorectal pathologies that require more complex management are priorities in tertiary hospitals such as "Hospital das Clínicas" University of São Paulo Medical Center (HCFMUSP). Therefore, benign, uncomplicated orifice conditions are relegated to second place. The number of patients with hemorrhoids, perianal fistulas, fissures, condylomas and pilonidal cysts who seek treatment at the HFMUSP is very great, resulting in over-crowding in the outpatient clinics and a long waiting list for recommended surgical treatment (at times over 18 months). The authors describe the experience of the HCFMUSP over an eight-day period with day-hospital surgery in which 140 patients underwent surgery. Data was prospectively taken on the patients undergoing surgery for benign orifice pathologies including age, sex, diagnosis, surgery performed, immediate and late postoperative complications, and follow-up, 140 patients operated on over eight days were studied, 68 were males (48.75%) with ages ranging from 25 to 62 (mean 35.2 yrs.). Hemorrhoids was the most frequent condition encountered (82 hemorrhoidectomies, 58.6%), followed by perineal fistula (28 fistula repairs, 20.0%). The most common complication was headache secondary to rachianesthesia occurring in 9 patients (6.4%). One patient (0.7%) developed bleeding immediately PO that required reoperation. Mean follow-up was 104 days. Day-surgery characterized by quality care and low morbidity is feasible in tertiary public hospitals, permitting surgery for benign orifice pathologies on many patients within a short period of time.

[Villous and tubulovillous adenomas of the colon and rectum. Results in 30 patients]. / Adenomas vilosos e túbulo-vilosos do cólon e reto. Resultados observados em 30 casos.

UNLABELLED: Colorectal adenomas precede carcinomas as much as they become larger and present villous histology. Since colonoscopic polypectomy cannot remove all polyps, surgical options include local resection as well as segmental colectomy. Significant morbidity and high recurrence rates may occur following individual and polyp-related characteristics. This paper focuses the clinical aspects of colorectal tubulo-villous adenomas and the results of the surgical treatment. PATIENTS AND METHODS: Hospital charts from 30 patients who underwent surgical treatment of colorectal tubulovillous adenomas between 1980 and 1997 were retrospectively reviewed. RESULTS: Rectal bleeding, urgency and mucus discharge were the most frequent clinical findings. Proctologic examination (digital and rigid rectosigmoidoscopy) diagnosed the lesion for the majority of cases. Seventy per cent of the polyps were in the distal rectum and 60% were larger than 4 cm. Transanal resection was the surgical option for one half of the patients and segmental colectomy for the other. Fourty-two per cent of the polyps that were considered benign as result of preoperative biopsy showed malignant transformation when the whole polyp was examined. Recurrence rate was 26.7% and 6.7% for patients who underwent local resection and segmental colectomy respectively. Postoperative complication rate was similar for the two surgical groups. CONCLUSIONS: Recurrence may occur frequently after standard local resection. Preoperative biopsy examination has no role for the diagnosis of malignant transformation. Office proctologic examination diagnoses majority of colorectal polyps that may be elected for surgical resection.

[Surgical treatment outcome of hemorrhoidal in 475 patients]. / Resultados do tratamentro cirúrgico da doença hemorroidária em 475 doentes.

Despite feared by patients and reserved for the minority of patients suffering from hemorrohoids, hemorrhoidectomy remains as the most effective approach to this condition. To analyse results from 475 hemorrhoidectomies performed at University of São Paulo Hospital das Clínicas between 1984 and 1995, a retrospective chart review regarding gender, age, associated anorectal conditions, surgical technique, complications and their management and follow-up was addressed. Two hundred and seven (43.6%) were male. Age between fourth and sixth decades were observed for 70.8%. Associated anorectal conditions were diagnosed in 18.9%. Chronic anal fissure was the commonest one. Milligan-Morgan operation was performed in the majority of patients (91.2%) and Ferguson technique in 6.7%. There were no intraoperative complications postoperative complications occurred in 38 (8%) patients regardless of employed surgical technique. Urinary retention was the commonest postoperative complication. Mean follow-up was 5.8 years for 70% of patients. Surgical hemorrhoidectomy remains as a treatment with excellent results in the management of hemorrhoid disease for selected patients. Produces erradications of the disease in all cases in spite of low morbidity.

[Results of the surgical treatment of non-complicated pilonidal disease]. / Resultados do tratamento cirúrgico de cisto pilonidal não-complicado.

In spite of the high incidence of pilonidal disease at young population and prolonged disabling period that it demands, colorectal surgeons have not reached consensus about etiology or best treatment for this condition. The authors intend to analyse results from 154 cases operated on at HCFMUSP through a retrospective chart analysis regarding patients' sex, age and race, operative technique, complications and recurrence. Half patients were male. Eighty-three percent were between 11 and 30 yr-old. Incision and curettage was offered to 74.7% of the patients. Excision technique was used in 25.3%. In patients who underwent excision technique, there were no recurrences and a cicatrization defect was diagnosed in 2 (5.1%) patients. For patients who underwent incision and curettage, recurrence was 3.5% and cicatrization defect was seen in 1 (0.9%) case. Excision or incision plus curettage techniques seem to be both effective for treatment of chronic pilonidal disease although the former may produce healing defect more commonly. Patients who present with complex lesions may benefit from excisional techniques associated to skin or myocutaneous flaps in a first attempt instead of conservative approaches.