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Jayaprakasam VS, Ince S, Suman G, Nepal P, Hope TA, Paspulati RM, Fraum TJ. PET/MRI in colorectal and anal cancers: an update. Abdom Radiol (NY) 2023; 48:3558-3583. [PMID: 37062021 DOI: 10.1007/s00261-023-03897-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/21/2023] [Accepted: 03/23/2023] [Indexed: 04/17/2023]
Abstract
Positron emission tomography (PET) in the era of personalized medicine has a unique role in the management of oncological patients and offers several advantages over standard anatomical imaging. However, the role of molecular imaging in lower GI malignancies has historically been limited due to suboptimal anatomical evaluation on the accompanying CT, as well as significant physiological 18F-flurodeoxyglucose (FDG) uptake in the bowel. In the last decade, technological advancements have made whole-body FDG-PET/MRI a feasible alternative to PET/CT and MRI for lower GI malignancies. PET/MRI combines the advantages of molecular imaging with excellent soft tissue contrast resolution. Hence, it constitutes a unique opportunity to improve the imaging of these cancers. FDG-PET/MRI has a potential role in initial diagnosis, assessment of local treatment response, and evaluation for metastatic disease. In this article, we review the recent literature on FDG-PET/MRI for colorectal and anal cancers; provide an example whole-body FDG-PET/MRI protocol; highlight potential interpretive pitfalls; and provide recommendations on particular clinical scenarios in which FDG-PET/MRI is likely to be most beneficial for these cancer types.
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Affiliation(s)
- Vetri Sudar Jayaprakasam
- Molecular Imaging and Therapy Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
| | - Semra Ince
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Garima Suman
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Pankaj Nepal
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - Thomas A Hope
- Department of Radiology & Biomedical Imaging, University of California, San Francisco, CA, USA
| | | | - Tyler J Fraum
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, USA
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Khader A, Braschi-Amirfarzan M, McIntosh LJ, Gosangi B, Wortman JR, Wald C, Thomas R. Importance of tumor subtypes in cancer imaging. Eur J Radiol Open 2022; 9:100433. [PMID: 35909389 PMCID: PMC9335388 DOI: 10.1016/j.ejro.2022.100433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/25/2022] [Indexed: 12/22/2022] Open
Abstract
Cancer therapy has evolved from being broadly directed towards tumor types, to highly specific treatment protocols that target individual molecular subtypes of tumors. With the ever-increasing data on imaging characteristics of tumor subtypes and advancements in imaging techniques, it is now often possible for radiologists to differentiate tumor subtypes on imaging. Armed with this knowledge, radiologists may be able to provide specific information that can obviate the need for invasive methods to identify tumor subtypes. Different tumor subtypes also differ in their patterns of metastatic spread. Awareness of these differences can direct radiologists to relevant anatomical sites to screen for early metastases that may otherwise be difficult to detect during cursory inspection. Likewise, this knowledge will help radiologists to interpret indeterminate findings in a more specific manner. Tumor subtypes can be identified based on their different imaging characteristics. Awareness of tumor subtype can help radiologists chose the appropriate modality for additional imaging workup. Awareness of differences in metastatic pattern between tumor subtypes can be helpful to identify early metastases.
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Affiliation(s)
- Ali Khader
- Department of Radiology, Lahey Hospital and Medical Center, Tufts University School of Medicine, 41 Mall Road, Burlington, MA 01805, the United States of America
| | - Marta Braschi-Amirfarzan
- Department of Radiology, Lahey Hospital and Medical Center, Tufts University School of Medicine, 41 Mall Road, Burlington, MA 01805, the United States of America
| | - Lacey J. McIntosh
- University of Massachusetts Chan Medical School/Memorial Health Care, Division of Oncologic and Molecular Imaging, 55 Lake Avenue North, Worcester, MA 01655, the United States of America
| | - Babina Gosangi
- Department of Radiology, Yale School of Medicine, 333 Cedar Street, New Haven, CT 06510, the United States of America
| | - Jeremy R. Wortman
- Department of Radiology, Lahey Hospital and Medical Center, Tufts University School of Medicine, 41 Mall Road, Burlington, MA 01805, the United States of America
| | - Christoph Wald
- Department of Radiology, Lahey Hospital and Medical Center, Tufts University School of Medicine, 41 Mall Road, Burlington, MA 01805, the United States of America
| | - Richard Thomas
- Department of Radiology, Lahey Hospital and Medical Center, Tufts University School of Medicine, 41 Mall Road, Burlington, MA 01805, the United States of America
- Correspondence to: Department of Radiology, Lahey Hospital and Medical Center, 41 Mall Road, Burlington, MA 01805, the United States of America.
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Huang A, Yang Y, Shi JY, Li YK, Xu JX, Cheng Y, Gu J. Mucinous adenocarcinoma: A unique clinicopathological subtype in colorectal cancer. World J Gastrointest Surg 2021; 13:1567-1583. [PMID: 35070064 PMCID: PMC8727185 DOI: 10.4240/wjgs.v13.i12.1567] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/02/2021] [Accepted: 08/30/2021] [Indexed: 02/06/2023] Open
Abstract
Mucinous adenocarcinoma (MAC) is a unique clinicopathological subtype of colorectal cancer, which is characterized by extracellular mucinous components that comprise at least 50% of the tumor tissue. The clinical characteristics, molecular features, response to chemo-/radiotherapy, and prognosis of MAC are different from that of non-MAC (NMAC). MAC is more common in the proximal colon, with larger volume, higher T-stage, a higher proportion of positive lymph nodes, poorer tumor differentiation, and a higher proportion of peritoneal implants compared to NMAC. Although biopsy is the main diagnostic method for MAC, magnetic resonance imaging is superior in accuracy, especially for rectal carcinoma. The aberrant expression of mucins, including MUC1, MUC2 and MUC5AC, is a notable feature of MAC, which may be related to tumor invasion, metastasis, inhibition of apoptosis, and chemo-/radiotherapy resistance. The genetic origin of MAC is mainly related to BRAF mutation, microsatellite instability, and the CpG island methylator phenotype pathway. In addition, the poor prognosis of rectal MAC has been confirmed by various studies, and that of colonic MAC is still controversial. In this review, we summarize the epidemiology, clinicopathological characteristics, molecular features, methods of diagnosis, and treatments of MAC in order to provide references for further fundamental and clinical research.
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Affiliation(s)
- An Huang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Yong Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Jing-Yi Shi
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Yu-Kun Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Jing-Xuan Xu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Yu Cheng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Jin Gu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
- Peking-Tsinghua Center for Life Science, Peking University International Cancer Center, Beijing 100142, China
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing 100144, China
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Ahmed IS, El Gaafary SM, Elia RZ, Hussein RS. FDG-PET/CT in predicting aggressiveness of rectal cancer. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2021. [DOI: 10.1186/s43055-021-00656-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Abstract
Background
Treatment response varies significantly among rectal cancer patients. Tumor can show complete regression, stationary appearance, or even tumour progression during the treatment. It is also widely known that the rate of local recurrence is variable. Precise risk stratification of tumor aggressiveness is required for better per patient tailored treatment plan and predicting the overall prognosis of rectal cancer patients The aim of this study was to assess different parameters of baseline [18F] fluorodeoxyglucose positron emission tomography/computed tomography [(18F) FDG-PET/CT] as a non-invasive tool in predicting aggressiveness of the rectal cancer.
Results
Overall, 33 patients were included [19 moderately differentiated adenocarcinoma, 10 poorly differentiated adenocarcinoma and 4 mucinous adenocarcinomas (MAC)]. SUV estimates (SUV max, SUV mean) were greater in the moderately adenocarcinoma group (p = 0.003 and p = 0.019, respectively). MTV and TLG values were similar between the three histopathological groups (p = 0.763 and p = 0.701, respectively). There was no correlation between SUVmax of primary tumor and MTV (r = 0.034; p = 0.849). However, SUVmax and TLG were significantly correlated (r = 0.517; p = 0.002). Strong correlation between tumor size and MTV (r = 0.489; p = 0.003), and TLG (r = 0.506; p = 0.003) were observed. No significant association was found between MTV and TLG and the clinical stage of rectal cancer.
Conclusion
Baseline 18F-FDG PET/CT parameters cannot be used alone as a non-invasive diagnostic technique in assessing aggressiveness and prognosis in patients with primary rectal cancer, and further clinical studies are needed before considering the prognostic role of FDG-PET/CT in rectal cancer.
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Kokaine L, Gardovskis A, Gardovskis J. Evaluation and Predictive Factors of Complete Response in Rectal Cancer after Neoadjuvant Chemoradiation Therapy. ACTA ACUST UNITED AC 2021; 57:medicina57101044. [PMID: 34684080 PMCID: PMC8537499 DOI: 10.3390/medicina57101044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 12/18/2022]
Abstract
The response to neoadjuvant chemoradiation therapy is an important prognostic factor for locally advanced rectal cancer. Although the majority of the patients after neoadjuvant therapy are referred to following surgery, the clinical data show that complete clinical or pathological response is found in a significant proportion of the patients. Diagnostic accuracy of confirming the complete response has a crucial role in further management of a rectal cancer patient. As the rate of clinical complete response, unfortunately, is not always consistent with pathological complete response, accurate diagnostic parameters and predictive markers of tumor response may help to guide more personalized treatment strategies and identify potential candidates for nonoperative management more safely. The management of complete response demands interdisciplinary collaboration including oncologists, radiotherapists, radiologists, pathologists, endoscopists and surgeons, because the absence of a multidisciplinary approach may compromise the oncological outcome. Prediction and improvement of rectal cancer response to neoadjuvant therapy is still an active and challenging field of further research. This literature review is summarizing the main, currently known clinical information about the complete response that could be useful in case if encountering such condition in rectal cancer patients after neoadjuvant chemoradiation therapy, using as a source PubMed publications from 2010–2021 matching the search terms “rectal cancer”, “neoadjuvant therapy” and “response”.
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Affiliation(s)
- Linda Kokaine
- Department of Surgery, Riga Stradins University, Dzirciema Street 16, LV-1007 Riga, Latvia; or
- Pauls Stradins Clinical University Hospital, Pilsoņu Street 13, LV-1002 Riga, Latvia
- Correspondence: (L.K.); (J.G.); Tel.: +371-2635-9472 (L.K.)
| | - Andris Gardovskis
- Department of Surgery, Riga Stradins University, Dzirciema Street 16, LV-1007 Riga, Latvia; or
- Pauls Stradins Clinical University Hospital, Pilsoņu Street 13, LV-1002 Riga, Latvia
| | - Jānis Gardovskis
- Department of Surgery, Riga Stradins University, Dzirciema Street 16, LV-1007 Riga, Latvia; or
- Pauls Stradins Clinical University Hospital, Pilsoņu Street 13, LV-1002 Riga, Latvia
- Correspondence: (L.K.); (J.G.); Tel.: +371-2635-9472 (L.K.)
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Borello A, Russolillo N, Lo Tesoriere R, Langella S, Guerra M, Ferrero A. Diagnostic performance of the FDG-PET/CT in patients with resected mucinous colorectal liver metastases. Surgeon 2021; 19:e140-e145. [PMID: 34581274 DOI: 10.1016/j.surge.2020.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/06/2020] [Accepted: 09/06/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND and purpose: FDG-PET/CT has gained acceptance for tumours staging. Few and conflicting data exist on the sensitivity of FDG-PET/CT in identifying colorectal mucinous liver metastases (mucCRLM). The aim of this study was to evaluate the diagnostic performance of the FDG-PET/CT in patients with mucCRLM who underwent liver surgery. METHODS All patients affected by mucCRLM scheduled for liver resection who had undergone preoperative FDG-PET/CT between 2005 and 2018 were analyzed. Diagnostic performance of FDG-PET/CT was assessed in organ and lesion-based analysis. RESULTS 58 patients out of 131 (44.2%) affected by mucCRLM fulfilled the inclusion criteria. 118 mucCRLM were detected. FDG-PET/CT confirmed 71 (60.2%) CRLM in 51 patients. The sensitivity and specificity of FDG-PET/CT were 89.4% and 100% in the organ-based analysis and 60.7% and 100% in lesion-based analysis. Absence of micro-vascular invasion (100% vs. 23%, p < 0.001) and median percentage of viable tumour cells were associated with FDG-PET/CT false negative (15% vs. 60%, p = 0.007). At ROC analysis viable tumour cells percentage >25% was associated with low risk of false negative (AUC 0.848; p = 0.006). CONCLUSIONS FDG-PET/CT had a significant rate of false negative results in patients with mucinous colorectal liver metastases. Negative FDG-PET/CT in patients with low percentage of viable tumour cells after chemotherapy should be considered with caution.
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Affiliation(s)
- Alessandro Borello
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy.
| | - Nadia Russolillo
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy
| | - Roberto Lo Tesoriere
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy
| | - Serena Langella
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy
| | - Martina Guerra
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy
| | - Alessandro Ferrero
- Department of General and Oncological Surgery, Mauriziano Hospital, Largo Turati 62, 10128, Turin, Italy
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PET/MRI Characterization of Mucinous Versus Nonmucinous Components of Rectal Adenocarcinoma: A Comparison of Tumor Metabolism and Cellularity. AJR Am J Roentgenol 2020; 216:376-383. [PMID: 33295813 DOI: 10.2214/ajr.19.22627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE. The purpose of this study was to evaluate whether FDG PET/MRI can be used to differentiate the mucinous from the nonmucinous components of primary rectal tumors and to compare the glycolytic metabolism on PET with tumor cellularity on DWI in both components. SUBJECTS AND METHODS. Ninety-nine patients who underwent FDG PET/MRI for staging of primary rectal cancer were included in this prospective analysis. MRI depicted the mucin component through the tumor volume. Separate volumes of interest were drawn on both mucinous and nonmucinous components and propagated to PET and apparent diffusion coefficient (ADC) mapping. Maximum and mean standardized uptake values (SUVmax, SUVmean) and maximum, mean, and minimum ADC values (ADCmax, ADCmean, ADCmin) were recorded and compared between areas with mucinous and nonmucinous components. Whole-body PET/MRI was also used to evaluate for the presence of distant metastases. Nonparametric testing was used to compare the two groups of patients: those with tumors with a mucinous component and those with tumors without a mucinous component. Logistic regression analysis was performed to calculate the association risk between mucinous component and metastatic disease. RESULTS. Seventeen patients (17.2%) had a mucinous component within the tumor on T2-weighted MRI. Most of these patients had advanced disease, the mucinous component tumors being in significantly higher T categories than the tumors without a mucinous component (88.2% vs 61.0%; p = 0.032). SUVmax (7.4 vs 16.7; p = 0.002) and SUVmean (5.4 vs 13.4; p = 0.001) were significantly lower in tumors with a mucinous component than in those without a mucinous component. Tumor ADC measurements were not different between tumors with and those without a mucinous component (ADCmean, 1.4 vs 1.6; p = 0.361). There was no association between presence of a mucinous component within the primary rectal tumor and presence of synchronous metastases (odds ratio, 1.1 [0.4-3.0]; p = 0.904). Moreover, the occurrence of metastases in patients with mucinous component tumors (7/17 [41.2%]) was not different from that in patients with tumors without a mucinous component (28/82 [34.1%]) (p = 0.887). CONCLUSION. PET/MRI can be used to differentiate the mucinous and nonmucinous components within primary rectal adenocarcinoma on the basis of metabolic status. The FDG uptake is significantly lower in the mucinous component, but tumor cellularity based on MRI and DWI findings is not. Despite being associated with a higher T category in the sample of patients in this study, the presence of a mucinous component seems not to be associated with increased risk of synchronous metastases.
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Childs DD, Rocha Lima CMSP, Zhou Y. Mucin-Containing Rectal Cancer: A Review of Unique Imaging, Pathology, and Therapeutic Response Features. Semin Roentgenol 2020; 56:186-200. [PMID: 33858645 DOI: 10.1053/j.ro.2020.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- David D Childs
- Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, NC.
| | | | - Yi Zhou
- Department of Pathology, Wake Forest University School of Medicine, Winston-Salem, NC
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Abstract
Rectal adenocarcinoma with mucinous components is an uncommon type of rectal cancer with two distinct histologic subtypes: mucinous adenocarcinoma and signet-ring cell carcinoma. Mucin can also be identified as pattern of response after neoadjuvant treatment. On imaging modalities, mucin typically demonstrates high signal intensity on T2-weighted images, low attenuation on computed tomography, and may be negative on 18-fluorodeoxyglucose positron emission tomography. After neoadjuvant CRT, cellular and acellular mucin share similar imaging features, and differentiating them is currently the main challenge faced by radiologists. Radiologists should be aware of pros, cons, and limitations of each imaging modality in the primary staging and restaging to avoid misinterpretation of the radiological findings.
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Horvat N, Hope TA, Pickhardt PJ, Petkovska I. Mucinous rectal cancer: concepts and imaging challenges. Abdom Radiol (NY) 2019; 44:3569-3580. [PMID: 30993392 DOI: 10.1007/s00261-019-02019-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Rectal adenocarcinoma with mucinous components is an uncommon type of rectal cancer with two distinct histologic subtypes: mucinous adenocarcinoma and signet-ring cell carcinoma. Mucin can also be identified as pattern of response after neoadjuvant treatment. On imaging modalities, mucin typically demonstrates high signal intensity on T2-weighted images, low attenuation on computed tomography, and may be negative on 18-fluorodeoxyglucose positron emission tomography. After neoadjuvant CRT, cellular and acellular mucin share similar imaging features, and differentiating them is currently the main challenge faced by radiologists. Radiologists should be aware of pros, cons, and limitations of each imaging modality in the primary staging and restaging to avoid misinterpretation of the radiological findings.
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Affiliation(s)
- Natally Horvat
- Department of Radiology, Hospital Sirio-Libanes, São Paulo, SP, Brazil
| | - Thomas A Hope
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Perry J Pickhardt
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Iva Petkovska
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, Box 29, New York, NY, 10065, USA.
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Mucin-Containing Rectal Carcinomas: Overview of Unique Clinical and Imaging Features. AJR Am J Roentgenol 2019; 213:26-34. [DOI: 10.2214/ajr.18.20864] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Habr-Gama A, São Julião GP, Vailati BB, Castro I, Raffaele D. Management of the Complete Clinical Response. Clin Colon Rectal Surg 2017; 30:387-394. [PMID: 29184475 DOI: 10.1055/s-0037-1606116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Organ preservation is considered in the management of selected patients with rectal cancer. Complete clinical response observed after neoadjuvant chemoradiation for rectal cancer is one of these cases. Patients who present complete clinical response are candidates to the watch-and-wait approach, when radical surgery is not immediately performed and is offered only to patients in the event of a local relapse. These patients are included in a strict follow-up, and up of 70% of them will never be operated during the follow-up. This strategy is associated with similar oncological outcomes as patients operated on, and the advantage of avoiding the morbidity associated to the radical operation. In this article we will discuss in detail the best candidates for this approach, the protocol itself, and the long-term outcomes.
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Affiliation(s)
- Angelita Habr-Gama
- Angelita & Joaquim Gama Institute, Sao Paulo, SP, Brazil.,University of Sao Paulo School of Medicine, Sao Paulo, SP, Brazil
| | | | | | - Ivana Castro
- Angelita & Joaquim Gama Institute, Sao Paulo, SP, Brazil
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São Julião GP, Habr-Gama A, Vailati BB, Araujo SEA, Fernandez LM, Perez RO. New Strategies in Rectal Cancer. Surg Clin North Am 2017; 97:587-604. [PMID: 28501249 DOI: 10.1016/j.suc.2017.01.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In recent years, our understanding of rectal cancer has improved, including how locally advanced disease responds to chemotherapy and radiation. This has led to new innovations and advances in the treatment of rectal cancer, which includes organ-preserving strategies for responsive disease, and minimally invasive approaces for the performance of total mesorectal excision/protectomyh for persistently advanced disease. This article discusses new strategies for rectal cancer therapy, including Watch and Wait, local excision, minimally invasive proctectomy, and transanal total mesorectal excision particularly in the setting of preoperative multimodality treatment.
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Affiliation(s)
- Guilherme Pagin São Julião
- Department of Colorectal Surgery, Angelita & Joaquim Gama Institute, Rua Manoel da Nóbrega 1564, São Paulo 04001, Brazil
| | - Angelita Habr-Gama
- Department of Colorectal Surgery, Angelita & Joaquim Gama Institute, Rua Manoel da Nóbrega 1564, São Paulo 04001, Brazil
| | - Bruna Borba Vailati
- Department of Colorectal Surgery, Angelita & Joaquim Gama Institute, Rua Manoel da Nóbrega 1564, São Paulo 04001, Brazil
| | - Sergio Eduardo Alonso Araujo
- Department of Colorectal Surgery, Hospital Israelita Albert Einstein, Avenida Albert Einstein 627, Suite 219, São Paulo 05652, Brazil
| | - Laura Melina Fernandez
- Department of Colorectal Surgery, Angelita & Joaquim Gama Institute, Rua Manoel da Nóbrega 1564, São Paulo 04001, Brazil
| | - Rodrigo Oliva Perez
- Department of Colorectal Surgery, Angelita & Joaquim Gama Institute, Rua Manoel da Nóbrega 1564, São Paulo 04001, Brazil.
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