The Colon, Appendix, Rectum, and Anus

2017 ◽  
Author(s):  
Daniel I. Chu ◽  
Margaret M Romine
Keyword(s):  
Colorectal Surgery ◽  
Water Absorption ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Vascular Anatomy ◽  
Lymphatic Drainage ◽  
Structural Features ◽  
Intestinal Wall ◽  
Clear Understanding ◽  
Functional Features

The colon, appendix, rectum, and anus have unique anatomic features, both structural and functional, that contribute to normal and pathologic states. Structural features discussed in this review include the layers of the intestinal wall, vascular anatomy, lymphatic drainage, and innervation. Functional features highlighted include the role(s) each organ plays in immunity, nutrient absorption, electrolyte secretion, water absorption, continence, and elimination of waste. A clear understanding of these structural and functional details is the foundation on which surgical techniques and treatment strategies are based when addressing surgical pathology. Key words: anus, appendix, colon, colorectal pathology, colorectal surgery, rectum

The Colon, Appendix, Rectum, and Anus

2017 ◽  
Author(s):  
Daniel I. Chu ◽  
Margaret M Romine
Keyword(s):  
Colorectal Surgery ◽  
Water Absorption ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Vascular Anatomy ◽  
Lymphatic Drainage ◽  
Structural Features ◽  
Intestinal Wall ◽  
Clear Understanding ◽  
Functional Features

The colon, appendix, rectum, and anus have unique anatomic features, both structural and functional, that contribute to normal and pathologic states. Structural features discussed in this review include the layers of the intestinal wall, vascular anatomy, lymphatic drainage, and innervation. Functional features highlighted include the role(s) each organ plays in immunity, nutrient absorption, electrolyte secretion, water absorption, continence, and elimination of waste. A clear understanding of these structural and functional details is the foundation on which surgical techniques and treatment strategies are based when addressing surgical pathology. This review contains 7 highly rendered figures, 3 tables, and 58 references. Key words: anus, appendix, colon, colorectal pathology, colorectal surgery, rectum

New Trends and Developments in Patients with Severe Aortic Stenosis – Towards Optimal Treatment?

2009 ◽  
Vol 5 (2) ◽  
pp. 81 ◽  
Author(s):  
Martijn WA van Geldorp ◽  
Johanna JM Takkenberg ◽  
Ad JJC Bogers ◽  
A Pieter Kappetein ◽  
◽  
...  
Keyword(s):  
Aortic Stenosis ◽  
Severe Aortic Stenosis ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Tissue Doppler ◽  
Doppler Imaging ◽  
Treatment Modalities ◽  
Diagnostic Tools ◽  
Number Of Patients ◽  
Transcatheter Valve

Over the next few decades the number of patients diagnosed with aortic stenosis is expected to rise as the population ages and the use of several diagnostic tools expands. This will result in a growing need for both medical and surgical treatment and stimulate the development of new diagnostic and surgical techniques. This article briefly describes the prevalence, pathogenesis and clinical presentation of patients with aortic stenosis and focuses on developments in diagnostic tools, treatment strategies and treatment modalities: the use of echocardiography, tissue Doppler imaging, stress testing and biomarkers is discussed, as well as timing of surgery and the role microsimulation can play in prosthesis selection. Furthermore, newly developed transcatheter valve implantation techniques and their possible role in treating ‘inoperable’ or ‘elderly’ patients are discussed.

scholarly journals A Closer Look at the Cellular and Molecular Components of the Deep/Muscular Fasciae

2021 ◽  
Vol 22 (3) ◽  
pp. 1411
Author(s):  
Caterina Fede ◽  
Carmelo Pirri ◽  
Chenglei Fan ◽  
Lucia Petrelli ◽  
Diego Guidolin ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Connective Tissue ◽  
Treatment Strategies ◽  
Clear Understanding ◽  
Pathological Characteristics ◽  
Appropriate Treatment ◽  
Different Types ◽  
Molecular Components ◽  
Entire Network ◽  
Shed Light

The fascia can be defined as a dynamic highly complex connective tissue network composed of different types of cells embedded in the extracellular matrix and nervous fibers: each component plays a specific role in the fascial system changing and responding to stimuli in different ways. This review intends to discuss the various components of the fascia and their specific roles; this will be carried out in the effort to shed light on the mechanisms by which they affect the entire network and all body systems. A clear understanding of fascial anatomy from a microscopic viewpoint can further elucidate its physiological and pathological characteristics and facilitate the identification of appropriate treatment strategies.

scholarly journals The Potential Association between the Risk of Post-Surgical Adhesion and the Activated Local Angiotensin II Type 1 Receptors: Need for Novel Treatment Strategies

2021 ◽  
pp. 1-8
Author(s):  
Mahmood Tavakkoli ◽  
Saeed Aali ◽  
Borzoo Khaledifar ◽  
Gordon A. Ferns ◽  
Majid Khazaei ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Molecular Mechanisms ◽  
Transforming Growth Factor ◽  
Therapeutic Potential ◽  
Angiotensin Receptor Blockers ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Transforming Growth Factor Β

<b><i>Background:</i></b> Post-surgical adhesion bands (PSABs) are a common complication after abdominal or pelvic surgeries for different reasons like cancer treatment. Despite improvements in surgical techniques and the administration of drugs or the use of physical barriers, there has only been limited improvement in the frequency of postoperative adhesions. Complications of PSAB are pain, infertility, intestinal obstruction, and increased mortality. The most important molecular mechanisms for the development of PSAB are inflammatory response, oxidative stress, and overexpression of pro-fibrotic molecules such as transforming growth factor β. However, questions remain about the pathogenesis of this problem, for example, the causes for individual differences or why certain tissue sites are more prone to post-surgical adhesions. <b><i>Summary:</i></b> Addressing the pathological causes of PSAB, the potential role of local angiotensin II/angiotensin II type 1 receptors (AngII/AT1R), may help to prevent this problem. <b><i>Key Message:</i></b> The objective of this article was to explore the role of the AngII/AT1R axis potential to induce PSAB and the therapeutic potential of angiotensin receptor blockers in the prevention and treatment of PSAB.

scholarly journals Nonvascular Complications of Injectable Fillers—Prevention and Management

2020 ◽  
Vol 53 (03) ◽  
pp. 335-343
Author(s):  
Kuldeep Singh ◽  
Shahin Nooreyezdan
Keyword(s):  
Early Recognition ◽  
Treatment Options ◽  
Treatment Strategies ◽  
Vascular Complications ◽  
Physical Characteristics ◽  
Clear Understanding ◽  
Type Iv ◽  
Acute Infections ◽  
Tyndall Effect ◽  
Delayed Complications

AbstractInjectable filler treatments have increased in popularity because of enhanced safety profile and improved physical characteristics. ISAPS (International Society of Plastic Surgery) put out global data showing 3.7 million hyaluronic acid (HA) filler procedures in 2018, making it the second most often performed procedure in the world, after botulinum toxin. And these are only ‘those’ performed by qualified plastic surgeons. There was a concomitant increase in both the nonvascular and vascular complications, which coincided with the number and type of filler procedures performed. Filler complications were reviewed from existing literature, and an attempt was made to understand etiology, elucidate clinical features, and clarify optimum treatment strategies for each. Complications can be early or delayed in presentation, early consisting of injection site complications like bruising, edema, and hypersensitivity, Tyndall effect, and intravascular injection. Delayed complications included hypersensitivity type IV, acute infections like cellulitis, abscesses, and herpes and delayed ones like granulomas, biofilms, and atypical mycobacterial infections. These were analyzed and treatment options, protocols, and consensus guidelines were suggested. A clear understanding of facial anatomy, physical characteristics of all fillers used, early recognition, and treatment options of complications will ensure optimum outcomes.

scholarly journals Lymphoscintigraphy in breast cancer: a short review about the impact on upper limb after surgical treatment

2008 ◽  
Vol 51 (spe) ◽  
pp. 83-89
Author(s):  
Anke Bergmann ◽  
Juliana Miranda Dutra de Resende ◽  
Sebastião David Santos-Filho ◽  
Marcelo Adeodato Bello ◽  
Juliana Flavia de Oliveira ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Surgical Treatment ◽  
Current Trend ◽  
Surgical Techniques ◽  
Short Review ◽  
Lymphatic Drainage ◽  
Key Words Breast ◽  
Axillary Lymphadenectomy ◽  
The One ◽  
The Impact

Breast cancer is still associated with high mortality rates and one of the most important factors governing long survival is accurate and early diagnosis. In underdeveloped countries, this disease frequently is only detected in advanced stages; however, through mammography, many women have been diagnosed at early stages. In this context, the sentinel lymph node (SLN) technique is associated with less postoperative morbidity compared to axillary lymphadenectomy. Lymphoscintigraphy has emerged as a method for the evaluation of lymphatic drainage chains in various tumours, being both accurate and non invasive. The aim of this work is to present the main aspects which cause controversy about SLN and lymphoscintigraphy and the impact that these procedures have had on lymphedema after surgical treatment for breast cancer. A short review including papers in English, Spanish and Portuguese, available on Lilacs and Medline database, published between January, 2000 and July, 2008 was performed. The key words breast cancer, lymphoscintigraphy, SLN biopsy, lymphedema were used. Various studies have aimed to compare the incidence and prevalence of lymphedema according to the technique used; however, the population subjected to SLN is different from the one with indication for axillary lymphadenectomy regarding staging. Moreover, little is known about long term morbidity since it is a relatively new technique. In conclusion, the development of surgical techniques has permitted to minimize deformities and the current trend is that these techniques be as conservative as possible. Thus, lymphoscintigraphy plays an important role in the identification of SLN, contributing to the prevention and minimization of postoperative complications.

Exploring the Contribution of Mycobacteria Characteristics in Their Interaction with Human Macrophages

2013 ◽  
Vol 19 (5) ◽  
pp. 1159-1169 ◽  
Author(s):  
Carla Silva ◽  
Joao Perdigao ◽  
Elsa Alverca ◽  
António P. Alves de Matos ◽  
Patricia A. Carvalho ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Cell Envelope ◽  
Treatment Strategies ◽  
Human Monocyte ◽  
Selective Advantage ◽  
Multidrug Resistant ◽  
Structural Features ◽  
Major Health Problem ◽  
Transmission Electron ◽  
Mdr Tb

AbstractTuberculosis (TB) is a major health problem. The emergence of multidrug resistant (MDR)Mycobacterium tuberculosis(Mtb) isolates confounds treatment strategies. In Portugal, cases of MDR-TB are reported annually with an increased incidence noted in Lisbon. The majority of these MDR-TB cases are due to closely related mycobacteria known collectively as theLisboafamily and Q1 cluster. Genetic determinants linked to drug resistance have been exhaustively studied resulting in the identification of family and cluster specific mutations. Nevertheless, little is known about other factors involved in development of mycobacteria drug resistance. Here, we complement genetic analysis with the study of morphological and structural features of theLisboafamily and Q1 cluster isolates by using scanning and transmission electron microscopy. This analysis allowed the identification of structural differences, such as cell envelope thickness, between Mtb clinical isolates that are correlated with antibiotic resistance. The infection of human monocyte derived macrophages allowed us to document the relative selective advantage of theLisboafamily isolates over other circulating Mtb isolates.

scholarly journals Pathogenesis and management of gastrointestinal inflammation and fibrosis: from inflammatory bowel diseases to endoscopic surgery

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Kentaro Iwata ◽  
Yohei Mikami ◽  
Motohiko Kato ◽  
Naohisa Yahagi ◽  
Takanori Kanai
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Tissue Repair ◽  
Relevant Literature ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Extended Resection ◽  
Bowel Diseases ◽  
Technical Advances ◽  
Inflammatory Bowel

AbstractGastrointestinal fibrosis is a state of accumulated biological entropy caused by a dysregulated tissue repair response. Acute or chronic inflammation in the gastrointestinal tract, including inflammatory bowel disease, particularly Crohn’s disease, induces fibrosis and strictures, which often require surgical or endoscopic intervention. Recent technical advances in endoscopic surgical techniques raise the possibility of gastrointestinal stricture after an extended resection. Compared to recent progress in controlling inflammation, our understanding of the pathogenesis of gastrointestinal fibrosis is limited, which requires the development of prevention and treatment strategies. Here, we focus on gastrointestinal fibrosis in Crohn’s disease and post-endoscopic submucosal dissection (ESD) stricture, and we review the relevant literature.

scholarly journals Structural features of the mesonephros of semianadromous fish on the example of the European smelt (Osmerus eperlanus)

2021 ◽  
Vol 12 (1) ◽  
pp. 96-102
Author(s):  
E. A. Flerova
Keyword(s):  
Plasma Cells ◽  
General Scheme ◽  
Light And Electron Microscopy ◽  
Aquatic Organisms ◽  
Structural Features ◽  
The Body ◽  
Leningrad Region ◽  
Hematopoietic Tissue ◽  
Functional Features ◽  
Osmerus Eperlanus

At present, special attention is drawn to the study of the adaptation of aquatic organisms to a complex of environmental factors precisely at the cellular level. It is very important to study the structural and functional features of the kidney, which not only plays a key role in osmoregulation, but also makes a significant contribution to maintaining homeostasis at the level of functioning of a single nonspecific defense system of the body. In this aspect, the study of species belonging to a unique ancient group, united in the order salmoniformes, is highly relevant. Using the methods of light and electron microscopy, we investigated the morphology and ultrastructure of the mesonephros of the population of the semianadromous ecological form European smelt Osmerus eperlanus inhabiting the Gulf of Finland of the Baltic Sea and performing spawning migrations in the Luga River of the Leningrad Region. The general scheme of the trunk kidney organization is given, the structural features and the ratio of leukocytes and structures of the smelt nephron are revealed. It is shown that the development of hematopoietic tissue in the mesonephros, the number of mature forms of granulocytes are systematic signs which do not depend on the ecology of the species. The ratio of leukocytes, the width of the cisterns of the rough endoplasmic reticulum of plasma cells, the structure and number of granules in granulocytes are associated with the peculiarities of the functioning of the cellular link of the immune system under certain conditions of the species habitat. The ultrafine structure of the ion-transporting interstitial cells, as well as the ultrastructural features found in the smelt nephron, can be considered cytological markers of smelt adaptation to a semianadromous lifestyle.

Lympedema Therapies

2021 ◽  
Author(s):  
Shailesh Agarwal ◽  
Catherine Wu
Keyword(s):  
Lymph Node ◽  
Drainage Basin ◽  
Parasitic Infection ◽  
Surgical Techniques ◽  
Lymphatic Drainage ◽  
The United States ◽  
Secondary Lymphedema ◽  
Complete Decongestive Therapy ◽  
Infection Treatment ◽  
Lymph Node Transfer

Secondary lymphedema refers to a condition in which the affected extremity develops progressive hypertrophy due to lymphatic fluid retention. Worldwide, secondary lymphedema is most often associated with parasitic infection; within the United States, secondary lymphedema is most often caused by surgical disruption of the lymphatic drainage basins due to cancer surgery and/or radiation. For patients with lymphedema secondary to parasitic infection, treatment of the offending infectious organism (Wuchereria bancroftii) is critical. For patients with surgical disruption of the lymphatic drainage basin(s), patients are first managed non-operatively with compression and manual lymphatic drainage massage. Over the past decade, surgical techniques have been developed and implemented to improve lymphatic drainage for patients with post-surgical secondary lymphedema. These procedures, including lymphovenous bypass or vascularized lymph node transfer, are aimed at reconstituting lymphatic drainage and reducing lymphatic retention to alleviate early lymphedema. An appreciation of the underlying physiology responsible for secondary lymphedema, and diagnosis and management is required to provide timely and appropriate care for these patients. This review contains 2 tables, 4 figures, and 32 references Keywords: lymphedema, lymphedema treatment, secondary lymphedema, complete decongestive therapy, lymphovenous bypass, vascularized lymph node transplantation, debulking surgery, ICG lymphangiography, lymphedema staging

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