Epidemiological analysis of tongue lesions in a tertiary health facility in Tanzania

Background: The tongue is susceptible to a multitude of conditions that can be of developmental, neoplastic, or inflammatory nature, whose occurrence varies globally by age, sex, and ethnicity. The objective of the present study was to determine the incidence of tongue lesions among cases managed in a tertiary hospital in Tanzania. Methods: This study analyzed histological results of patients with tongue lesions diagnosed between 2016 and 2021. Data on the age and sex of the patients and histological diagnosis were collected. Data analysis was done using Statistical Package for the Social Sciences version 27. Results: A total of 190 samples of tongue lesions were studied and 18 different histological diagnoses were observed. Generally, a majority (84.2%) of the biopsied tongue lesions were malignant. The most common (74.7%) lesions diagnosed were squamous cell carcinoma followed by hemangioma (5.3%). A significant association was noted between the nature of the lesions and the age group and sex of the patients. Conclusion: This analysis depicts that tongue lesions are frequently encountered in patients managed in tertiary health facilities in Tanzania. A majority of these lesions are malignant tumors. The sex and age of the patients are determining factors for the occurrence of tongue lesions

Evaluation of an assistant diagnosis system for gastric neoplastic lesions under white light endoscopy based on artificial intelligence / 中华消化内镜杂志

Objective:To assess the diagnostic efficacy of upper gastrointestinal endoscopic image assisted diagnosis system (ENDOANGEL-LD) based on artificial intelligence (AI) for detecting gastric lesions and neoplastic lesions under white light endoscopy.Methods:The diagnostic efficacy of ENDOANGEL-LD was tested using image testing dataset and video testing dataset, respectively. The image testing dataset included 300 images of gastric neoplastic lesions, 505 images of non-neoplastic lesions and 990 images of normal stomach of 191 patients in Renmin Hospital of Wuhan University from June 2019 to September 2019. Video testing dataset was from 83 videos (38 gastric neoplastic lesions and 45 non-neoplastic lesions) of 78 patients in Renmin Hospital of Wuhan University from November 2020 to April 2021. The accuracy, the sensitivity and the specificity of ENDOANGEL-LD for image testing dataset were calculated. The accuracy, the sensitivity and the specificity of ENDOANGEL-LD in video testing dataset for gastric neoplastic lesions were compared with those of four senior endoscopists.Results:In the image testing dataset, the accuracy, the sensitivity, the specificity of ENDOANGEL-LD for gastric lesions were 93.9% (1 685/1 795), 98.0% (789/805) and 90.5% (896/990) respectively; while the accuracy, the sensitivity and the specificity of ENDOANGEL-LD for gastric neoplastic lesions were 88.7% (714/805), 91.0% (273/300) and 87.3% (441/505) respectively. In the video testing dataset, the sensitivity [100.0% (38/38) VS 85.5% (130/152), χ2=6.220, P=0.013] of ENDOANGEL-LD was higher than that of four senior endoscopists. The accuracy [81.9% (68/83) VS 72.0% (239/332), χ2=3.408, P=0.065] and the specificity [ 66.7% (30/45) VS 60.6% (109/180), χ2=0.569, P=0.451] of ENDOANGEL-LD were comparable with those of four senior endoscopists. Conclusion:The ENDOANGEL-LD can accurately detect gastric lesions and further diagnose neoplastic lesions to help endoscopists in clinical work.

Histopathological Evaluation of Solitary Nodules of Thyroid

Introduction: Solitary Thyroid nodules (STNs) can be ofboth non-neoplastic or neoplastic in nature and it is difficultto assess whether an STN is neoplastic or non-neoplasticby clinical examination alone. Imaging technique mayhelp in differentiating them preoperatively but histologicalexamination offers the final diagnosis. This study was aimedat studying the incidence rates of various types of STNs as itvaries from one geographical area to another.Material and methods: A total of 58 cases of STNsreceived over the period of 18 months were studied andhistopathological features were analysed.Results: In this study, non-neoplastic STNs were 32 (55.17%)and neoplastic were 26 (44.82%), the former being morecommon. There was a female preponderance in both nonneoplastic and neoplastic STNs with an incidence of 90.62%and 84.61% respectively. Mean age of presentation of STNswas 42.09 years. Non-neoplastic lesions of thyroid were; 18cases of colloid nodules, 10 cases of hyperplastic nodulargoitre, 04 cases of Hashimoto Thyroiditis and the neoplasticlesions were; 05 cases of follicular adenoma, 11 cases oftypical/conventional papillary carcinoma of thyroid (PTC),6 cases of papillary carcinoma thyroid variants, 01 case offollicular carcinoma 01 case of Undifferentiated carcinoma,01 case of Squamous cell carcinoma and 01 case of medullarycarcinoma.Conclusion: STNs are not so uncommon and comprise of agamut of both non-neoplastic and neoplastic lesions. Colloidnodule and PTC are the most common of non-neoplastic andneoplastic STNs respectively.

Study of diagnostic importance of fine needle aspiration cytology in various body lesions in a predominantly rural mountainous region of Jammu and Kashmir, G.M.C Doda, India

Background: Fine Needle Aspiration Cytology (FNAC) is a procedure of choice as the first line of investigation in diagnosing non-neoplastic and neoplastic swellings of different areas as it has been found to be highly accurate and very useful, cost effective, offer early diagnosis after presentation and  treatment. In this present study in Department of pathology, data was collected and scrutinized. Cytology of various sites including breast, head and neck, salivary glands, thyroid, lymph nodes, etc. was done.Methods: FNAC is performed with the help of 21-22-gauge needle attached with 20 ml syringe by taking all aseptic precautions. Total of 70 cases were collected over a period of 4 months from April 2019 to July 2019.Results: Out of total 70 samples maximum number of cases were found in 21-30 years of age (16 cases); Males were 34(49%) and females were 36(51%) in number. 38 cases (54%) were non-neoplastic ,23 cases (33%) were neoplastic and in 9 cases (13%) no opinion was made. This study included 70 cytologically diagnosed cases. Out of which 38 cases (54%) were non-neoplastic, 23 cases (33%) neoplastic and in 9 cases (13%) no possible opinion could be made due to a number of factors like: Material not corresponding of representative area, small size of lesion, wrong technique, cystic areas, hemorrhage and necrosis and small foci of neoplastic lesion.Conclusions: Even though a number of limitations, FNAC has high accuracy in diagnosing benign and malignant lesions of various sites and thus reduces the period between presentation of tumours and their diagnosis which results in early management.

A Clinico- Pathological Study of Lesions of Gastrointestinal Tract

The disorders of gastrointestinal tract are responsible for a great deal of morbidity and mortality. The present study was conducted to determine lesions of gastrointestinal tract. Methods: This present study was conducted on 62 specimens of GIT tract. Biopsies from the gastrointestinal sites such as esophagus, pharynx, stomach, duodenum, liver, small intestine, colon, rectum and anal canal were obtained. Results: Maximum specimens were obtained from age group 21-30 years (24), followed by 11-20 years (16), 31-40 years (10), 41-50 years (8) and >50 years (4). 50 lesions were nonneoplastic and 12 were neoplastic. Most common non- neoplastic lesions were seen in gall bladder followed by esophagus (10) and small intestine (5). In neoplastic lesions, most common organ involved was gall bladder (5) followed by esophagus (3). In non- neoplastic lesions, chronic inflammatory lesion of oesophagus was seen in 10, appendicular lesions in 3, gall bladder lesions in 26, colonic perforation in 4, crohn’s disease of small intestine in 5 and peptic ulcers in 2. Neoplastic lesions were SCC of esophagus in 3, adenocarcinoma of small intestine in 1, adenocarcinoma of large intestine in 1, SCC of stomach in 2 and adeonma of gall bladder in 5 cases. Conclusion: Authors found that most commonly non- neoplastic lesions were seen involving gall bladder and in age group 21-30 years.

A Study of Histopathological Spectrum of Thyroid Lesions

Introduction: Thyroid lesions are fairly common worldwide and are commonly encountered in clinical practice. Thyroid lesionsmay be developmental, inflammatory, hyperplastic, and neoplastic.Aim: This study aims to study the spectrum of various lesions of the thyroid and various histopathological patterns of thyroidlesions.Materials and Methods: In this retrospective observational study, a total of 100 thyroid tissue specimens were examined.Relevant clinical information such as patient age, gender, and clinical presentation and other information such as fine-needleaspiration cytology, ultrasound, and surgical findings were obtained.Results: Non-neoplastic lesions accounted for 84 cases (84%) and neoplastic lesions constituted 16%. The most commonnon-neoplastic lesion was multinodular goiter (MNG) (43%), followed by colloid goiter (29%), Hashimoto thyroiditis (9%), andthyroglossal duct cyst (3%).Conclusion: In our study, thyroid diseases showed definite female predominance, with most of them occurring in an age groupof 31–40 years. MNG is the most common disease occurring clinically, radiologically, and cytologically. Follicular adenoma wasthe most common benign neoplastic disease.

Alcohol and tobacco induced infiltrating ductal carcinoma male: a case report

Male breast cancer is a rare cancer that forms in the breast tissue of men, it accounts for 1% of all the cancers in men. Recent epidemiological studies suggest that the incidence of MBC is increasing by 1.1% per year.  Due to lack of knowledge and awareness, MBC cases are diagnosed lately, mostly during stages III /IV. Early detection and reduction of mortality and morbidity related to male breast cancer is essential. The present article provides a detailed study of a patient with Infiltrating ductal carcinoma, grade III with regional nodal metastasis and the patient is positive for both oestrogen and progesterone receptors. In this case the patient is alcoholic and had habit of chewing tobacco since childhood and one of the patient’s relative had female breast cancer. These are the probable risk factors in this particular case. The better knowledge regarding the male breast carcinoma can be obtained through the thorough study of the available male breast cases.

Histopathological Study Of Non-neoplastic Lesions Of Nose, Paransal Sinuses And Nasopharynx

Background: The various lesions of the nose, paranasal sinuses and nasopharynx were subjected to histopathological evaluation over a period of 5 years (2010 to 2015) at the Department of Pathology, in a rural based hospital. Total 84 specimens were studied over the time of 5 years. Methodology: The formalin fixed specimens were received with complete clinical and radiological features. Routine gross examination and required number of sections were taken and stained with hematoxylin and eosin. Result: In the study, 84 cases were of Inflammatory and Non neoplastic le-sions. Nasal polyps were the most common lesions with 77 (91.67%) cases. Among the all Nasal polyps, 77 cases, 20 (25.97%) cases were of Allergic polyp, 50 (64.93%) cases were of inflammatory polyp, while 7 (9.09%) cases were of Antrochoanal polyp. 2 cases (2.38%) each of Sinusitis and Intradermal naevus. Rhinosporidiosis, Mucocele and Na-solabial cyst comprised of 1 (0.77%) case each respectively. Conclusion: In our study, most common lesions were Nasal Polyps. Most of the cases were presented in 2ndand3rddecade of life with Male preponderance. Nasal obstruction was the most common clinical presentation in the present study.

Research progress of ocular surface squamous neoplasia / 国际眼科杂志(Guoji Yanke Zazhi)

· Ocular surface squamous neoplasia(OSSN) is a type of ocular surface tumor,which is difficult to diagnose because of its low incidence is low and it is easy to be confused with pterygium.In recent years,the improvement of various diagnostic techniques and the extensive application of interferon (IFN) to OSSN therapy have greatly reduced the recurrence rate,and the diagnostic and therapeutic methods of OSSN tend to be diversified.Understanding the current causes of OSSN and the ways of treatment can better guide the OSSN study.

Analysis of non-neoplastic hepatic lesions in SD rats at different age / 中国职业医学

OBJECTIVE: To explore the non-neoplastic hepatic lesions in SD rats at different ages. METHODS: The specificpathogen free SD rats were collected from the blank control groups used in subacute toxicity tests,subchronic toxicity tests and chronic toxicity combined with carcinogenic tests for safety evaluation. At the end of each experiment,i. e. week 10,19,56 and 108(assigned into four groups: 10,19,56 and 108 weeks,each contained 100 rats with each sex),rats were executed. The liver organ coefficient was calculated,the pathological examination was performed,and the non-tumorous lesions in the liver were analyzed. RESULTS: The liver organ coefficients at the age of 19,56,108 weeks were lower than that of 10 weeks(P < 0. 05); those at the age of 56 and 108 weeks were lower than that of 19 weeks(P < 0. 05),and that of 108 weeks was greater than of 56 weeks(P < 0. 05). Among the 10-week-old,19-week-old,56-week-old and 108-week-old groups,the types of non-neoplastic hepatic lesions detected in the female rats were 6,6,13 and 15 respectively,meanwhile those in the male rats were 6,6,13 and 15 respectively. Both male and female rats,the incidences of hepatocyte fatty degeneration,edema and hepatic infiltration of inflammatory cells were significantly increased with the increase of age in each group(P < 0. 05). The incidences of intrahepatic bile duct proliferation and intrahepatic bile duct fibrosis in rats at the age of 56 and 108 weeks were higher than those at the age of 10 and 19 weeks(P < 0. 008).Moreover,the frequency of hepatic sinus expansion lesions in rats at the age of 108 weeks was higher than those of 19 weeks(P < 0. 008). CONCLUSION: Spontaneous non-neoplastic lesions in the liver of SD rats were common,primarily demonstrated as hepatocyte fatty degeneration,edema and infiltration of inflammatory cells. The incidences of lesions increased with the increase of age.

Imaging features and differential diagnosis of obstructive jaundice caused from non-neoplastic diseases / 中华消化外科杂志

Objective To investigate the imaging features and differential diagnosis of obstructive jaundice caused from non-neoplastic diseases.Methods The retrospective descriptive study was conducted.The clinical data of 62 patients with obstructive jaundice caused from non-neoplastic diseases who were admitted to the Peking University People's Hospital between August 2014 and August 2016 were collected,including 13 with immunoglobulin G4 associated cholangitis (IAC),2 with primary sclerosing cholangitis (PSC),21 with recurrent purulent cholangitis (RPC),2 with Mirizzi syndrome,4 with groove pancreatitis (GP) and 20 with Lemmel syndrome.All the patients underwent plain and enhanced scans of computed tomnography (CT) and magnetic resonance imaging (MRI) and magnetic resonanced cholangio-pancreatography (MRCP).Film reading were respectively done by 2 imaging doctors,and then was analyzed again by senior doctors when there is disagreement.Observation indicators:(1) situations of imaging exanination and imaging features;(2) treatment and follow-up.Patients received laboratory and related examinations and then underwent corresponding treatment after diagnosis.Follow-up using outpatient examination and telephone interview was performed once every 6 months to detect patients' prognosis up to November 2016.Results (1) Situations of imaging examination and imaging features:of 62 patients,21 underwent plain and enhanced CT scans,7 underwent plain and enhanced MRI scans,4 underwent MRCP,15 underwent plain and enhanced CT scans and MRCP,1 underwent plain and enhanced CT scans and plain and enhanced MRI scans,3 underwent plain and enhanced MRI scans and MRCP and 11 underwent plain and enhanced CT scans,plain and enhanced MRI scans and MRCP.Imaging features of 13 patients with IAC:MRI scans showed that diffuse and symmetrical bile duct walls were thickened,with delayed enhancement.The narrowed lumen of bile duct was mainly occurred in common bile duct,without occlusion.Of 13 patients with IAC,9 were combined with IgG4 associated pancreatitis and 7 with bilateral nephropathy.Imaging features of 2 patients with PSC:MRI scans showed that bile duct wall was multiple localized thickening and persistent enhancement,that was imaging feature of liver cirrhosis.MRCP examination showed that intra-and extra-hepatic bile ducts had multifocality stricture and beading-like and/or dry twig-like dilatation,and branches of intrahepatic peripheral bile duct were reduced.Imaging features of 21 patients with RPC:MRI and CT scans and MRCP examination showed that there was thickening bile duct wall and delayed enhancement.The first and second level of intrahepatic bile duct were segmental dilatation,distal bile duct dramatically narrowed and branches of intrahepatic bile duct were reduced.Most of extrahepatic bile duct was dilatation and a few were narrow-like changes.There were stones of intrahepatic bile duct and pneumobilia.Liver parenchymal atrophy with cholangiectasis occurred most frequently in left lobe or right posterior lobe of liver.There were secondary liver abscess and cholangiocarcinoma.Imaging features of 2 patients with Mirizzi syndrome:MRI scans showed that there was common hepatic duct stricture caused by stones in the junction between neck of gallbladder and common hepatic duct,and intra-and extra-hepatic bile ducts dilatation in proximal end of stones and normal bile duct in distal end of stones.There were gallbladder and biliary fistulas,irregular gallbladder wall thickening and inflammation around the gallbladder.Imaging features of 4 patients with GP:MRI scans showed that no clear mass was detected in duodenal loop and head of pancreas,with heterogeneous and slightly irregular enhancement.Cyst formation occurred in intramural wall of duodenum and head of pancreas.Enhanced MRI scans showed that common bile duct wall was thickened and slightly irregular stricture,pancreatic duct was normal or mild expansion,and thickened duodenal wall had varying degrees of stenosis of lumen.Imaging features of 20 patients with Lemmel syndrome:MRI scans showed that pouch-like structure was detected inside of the descending duodenum,with thin cyst wall and liquid in cyst wall.MRCP examination showed dilatations of common bile duct and intra-and extra-hepatic bile ducts.(2) Treatment and follow-up:of all the 62 patients,30 underwent corresponding surgeries,including 2 with IAC,1 with PSC,7 with RPC,2 with Mirizzi syndrome,3 with GP and 15 with Lemmel syndrome,and the other 32 without surgery received corresponding medical treatment.Sixty of 62 patients were followed up for 3-17 months.During follow-up,28 patients undergoing surgery received definitive diagnosis and good recovery,2 were lost after definitive diagnosis and 32 undergoing medical treatment were in stable condition.Conclusion Non-neoplastic diseases can cause obstructive jaundice,with a higher misdiagnosis rate,imaging findings of which can be conducive to diagnose diseases and provide clinical treatment.

Differential Diagnosis between Neoplastic and Non-Neoplastic Brain Lesions in Radiology / Diagnóstico diferencial entre lesões cerebrais neoplásicas e não neoplásicas em radiologia

Introduction The observation of multiple lesions in a skull computed tomography (CT) scan is always cause for concern because of the frequent possibility of neoplastic etiology, although granulomatous, infectious, vascular, iatrogenic, demielinating, trauma, parasitic diseases, and strokes can produce a similar aspect on radiology. A wide range of non-neoplastic conditions can mimic a brain tumor, both clinically and radiologically, representing a potential pitfall for physicians involved in patient care. The study's goal is to alert specialists to the possibility of other neoplastic and nonneoplastic etiologies in the differential diagnosis of hypodense lesions in non-contrast. Methods We performed a literature review using PubMed, Medline, Science Direct, Embase, Clinical Trials, Ebsco, and Scielo. Articles were selected in the period of 1986 to 2015. Discussion Knowledge of various etiologies when with multiple lesions appear on computed tomography allows specialists to guide the diagnosis to appropriate treatment, avoiding the irradiation of non-neoplastic lesions and unnecessary surgeries. The most common lesions were the neoplasm (74% to 86%), especially gliomas, followed by infections (8% to 15%), and infarcts (0.6% to 6%), which represent nonneoplastic lesions. Conclusion Given the relatively high percentage of wrong neuroradiology diagnoses, most cases may require histological diagnosis, because even magnetic resonance imaging (MRI) renders difculties in distinguishing such lesions.

Introdução Observação de múltiplas lesões na tomograa computadorizada de crânio (TC) é sempre motivo de preocupação por causa da possibilidade frequente de etiologia neoplásica, embora as doenças granulomatosas, infecciosas, vascular, iatrogênica, desmielinizante, trauma, e parasitárias podem produzir aspecto semelhante na radiologia. Uma ampla gama de condições não neoplásicas pode mimetizar um tumor cerebral, tanto clínica, quanto radiologicamente, representando uma armadilha potencial para os médicos envolvidos no cuidado ao paciente. O objetivo do estudo é alertar a possibilidade de outras etiologias neoplásicas e não neoplásicas no diagnóstico diferencial de lesões hipodensas em TC sem contraste. Métodos Revisão da literatura utilizando PubMed, MEDLINE, Google Scholar, Ensaios Clínicos, EBSCO, Scielo, Tópicos em radiologia. Foram selecionados por período 1986- 2015. Discussão O conhecimento de várias etiologias, quando confrontado com múltiplas lesões na tomograa computadorizada permite o direcionamento do diagnóstico para o tratamento adequado, evitando a irradiação de lesões não neoplásicas e cirurgias desnecessárias. As lesões mais frequentes são neoplasias (74% a 86%), especialmente gliomas, seguido de infecções (8% a 15%) e infartos (0,6% a 6%), que representam lesões não neoplásicas. Conclusão Como um possível resultado da percentagem relativamente elevada de diagnósticos errados neurorradiológicos, o diagnóstico histológico faz necessário, porque mesmo Ressonância pode ser difícil na diferenciação de tais lesões.

A Case of Caseous Calcification in the Left Ventricular Outflow Tract with Loss of Consciousness / 日本心臓血管外科学会雑誌

<p>A 61-year-old woman presented with loss of consciousness. Echocardiography revealed a hypoechoic, round mass of 12×13 mm with a smooth border in the left ventricular outflow tract, leading to a diagnosis of loss of consciousness caused by left ventricular outflow tract obstruction, and surgical excision of the mass was performed. The mass, with a smooth, elastic soft surface and filled with yellow, creamy contents, was observed within a range from the subannular region of the left coronary cusp to the anterior mitral leaflet. Pathological examination showed central degeneration and liquefaction, as well as cystic, coarse-granular calcium deposition surrounded by inflammatory cell infiltration and fibroblast proliferation. No tumor cells were seen. Abscess was excluded by preoperative clinical presentations, hematologic data, and culture testing, and thus the mass was considered as caseous calcification of the mitral annulus. Here, we report a case of caseous calcification of the mitral annulus, a rare nonneoplastic lesion thought to be a variant of mitral annular calcification, with literature review.</p>

Evaluation of the relevance of touch imprint cytology in the diagnosis of various neoplastic lesions.

Background: Imprint is a very simple and rapid technique for tissue diagnosis. Imprint is a touch preparation in which tissue is touched on a slide and it leaves behind its imprint in the form of cells on the glass slide. In present study we have correlated the cytological diagnosis by imprint with histological diagnosis and tried to evaluate the accuracy and usefulness of this. Methods: The study was conducted in department of Pathology of Pt J.N.M. Medical College, Raipur (C.G) India. From neoplastic lesions imprint smears were prepared immediately after resection of surgical specimen. After preparation of imprint smears specimens were processed by routine histopathological processing. Final reports of both processes were compared to know accuracy of diagnosis by imprint cytology. Results: Out of total 110 cases, 25 cases were benign and 85 cases were malignant. Out of the 25 benign cases, 14 (56%) were diagnosed correctly and correlated with histological diagnosis. while 11 (44%) cases were false negative. No false positive cases were there. Out of 85 malignant lesions 78 (91.76%) were diagnosed correctly and correlated on histopathology, while 7 (8.23%) were false negative. Overall diagnostic accuracy by imprint smear after histological correlation was 83.63% increasing to 91.76% for malignant lesions. Conclusions: With an accuracy rate of 83.63% we can say that imprint cytology is a quick reliable simple and cost effective procedure.

Non-neoplastic lesions of the ovary - A review.

Ovary is an important organ as it is concerned with the production of progeny. Ovary is the commonest site of neoplastic and non-neoplastic lesion, can present in childhood to postmenopausal age group and accounts for the most prevalent cause of hospital admissions. non-neoplastic ovarian lesions are classified as inflammatory (infectious and non infection ), non-inflammatory (cystic and non-cystic) and pregnancy related disorders.

Histopathological study of neoplastic lesions of large intestine in Kashmir Valley, India.

Background: Aim of current study was to study the histopathological spectrum of neoplastic lesions of large intestine and histopathological pattern of colorectal carcinoma in young adults. Methods: We took a combined retrospective & prospective study in the department of pathology. The specimens were collected from subjects diagnosed as colorectal carcinomas in histopathology department and clinical details were sought from the medical records. Variables like age, sex, dietary habit, relevant history, tumor size, location, type of lesion, histological pattern of patients were checked. Results: In the series of 446 patients of colorectal neoplasm, maximum number of patients presented in 4th to 6th decade of life (47.30%), while as (15.46%) were between 20-40 years. The youngest patient with an adenocarcinoma was 18 years (male) of age and the oldest one was 80 years (male) of age. Average age of patients was 50.50 years. The male to female ratio was 1.3:1. The study revealed that the carcinoma of ascending colon was much more prevalent, constituting 107 (40.07%) cases. The proportion of well differentiated carcinoma was highest in left side colon and rectum. The incidence of moderately differentiated and poorly differentiated carcinoma was greater on right side colon. Conclusion: Adenocarcinoma is the most common histological variant of colon carcinomas.

Spontaneous neoplastic lesions of Wistar rats and their incidences / 中国实验动物学报

Objective To investigate the spontaneous neoplastic lesions and their incidences in rats .Methods Sixty male and 60 female specific pathogen-free Wistar rats (4-weeks old ) were used in this study .The rats were acclima-ted for 1 week prior to initiation of the experiment .They were fed with conventional feed for 104 weeks and then sacrificed for histopathological examination .Results Various neoplastic lesions of the rats and their incidences were analyzed and reported.For male rats, their total tumor incidence was 49.12%, the benign tumor incidence was 38.60%and the malig-nant tumor incidence was 17.54%.The benign neoplastic lesions mainly were pituitary adenoma ( 19.30%) , testis Leydig cell tumor (5.26%) and subcutaneous fibroma (5.26%).The malignant neoplastic lesions mainly were squamous cell carcinoma (7.02%) and lymphoid hematopoietic system tumors (3.51%).For female rats, their total tumor inci-dence was 60.34%, the benign tumor incidence was 50.00%and the malignant tumor incidence was 15.52%.The benign neoplastic lesions mainly were breast fibroadenoma (25.86%) and pituitary adenoma (24.14%).The malignant neoplas-tic lesions mainly were adenocarcinoma (5.17%) and breast cancer (3.45%).Conclusions The spontaneous neoplastic lesions and their incidences reported in this paper provide another data of the spontaneous tumors of SPF Wistar rats and may provide some reference for relevant technical staffs .

Histopathological Study of Neoplastic Lesions of Breast.

Aims and Objectives: 1) To study the incidence of various neoplastic lesions of breast. 2) To study the histopathological features of neoplasms and classify them according to WHO classification (2003). 3) To compare the results of study with those of other studies. Materials and Methods: The present study was prospective as well as retrospective which include 252 cases from October 2005 to October 2010. The specimens were received in different forms such as excisional biopsies, modified radical mastectomies, simple mastectomies, tru-cut biopsies, wide local excision and quadrantectomy specimens. Detail gross examination was done for each specimen and histopathological features were studied to classify neoplasms according to WHO classification 2003. Results: Out of total 9086 biopsies, breast biopsies were 366 (4%) during this 5 year study. Total 252 breast neoplasms were studied, where, the incidence of benign neoplasms was 50.4% (127 cases) & for malignant neoplasms was 49.6% (125 cases). Among all types of specimen received, excision biopsy was most common (48%). Upper outer quadrant was most commonly involved region for breast neoplasms. Fibroadenoma, benign phyllodes neoplasm, tubular adenoma, central papilloma, peripheral papilloma, lipoma and neurofibroma were seen among benign neoplasms. While invasive ductal carcinoma not otherwise specified, mixed carcinoma, metaplastic carcinoma, mucinous carcinoma, malignant phyllodes neoplasm, invasive lobular carcinoma, invasive papillary carcinoma, medullary carcinoma, intracystic papillary carcinoma, malignant peripheral nerve sheath neoplasm and collision neoplasm were studied among malignant neoplasms. The most common benign neoplasm was fibroadenoma (87%) and invasive ductal carcinoma not otherwise specified (88%) was malignant neoplasm. Conclusions: Fibroadenoma was the most common (87%) benign breast neoplasm. Among all malignant breast neoplasms, invasive ductal carcinoma, not otherwise specified was most common (88%). In cases of benign neoplasms, the highest incidence was found in the age group of 10-20 years (37%) while in the malignant neoplasms, it was 40 - 60 years (51.2%). The incidence of malignant breast neoplasm in male was 2.4%.

Factores asociados con lesiones neoplásicas del tracto genital inferior femenino en adolescentes del departamento de Caldas / Fatores associados com lesões neoplásticas do conduto genital inferior feminino em adolescentes do departamento de Caldas / Factors associated with neoplasm of the lower female genital tract in teens in the department of Caldas

En este artículo se presentan los resultados de un estudio epidemiológico analítico-descriptivo, cuyos objetivos fueron: conocer y determinar cómo se asocian factores biológicos y psicosociales con la presencia de lesiones neoplásicas del tracto genital inferior femenino en una población adolescente del departamento de Caldas, lo cual se relacionó, por un lado, con el análisis de la distribución y frecuencia de la población estudiada en cuanto a sexualidad, reproducción, factores culturales y factores psicosociales, y por otro, con la interacción de factores de riesgo en la aparición de dichas lesiones. Se tomó una muestra de 269 mujeres, seleccionadas después de su participación en jornadas educativas respecto a cáncer de cuello uterino y de mama. A este grupo se le aplicó una encuesta estructurada, diseñada para tal fin, la cual se diligenció directamente por los investigadores, previo consentimiento informado. A cada informante se le realizó citología y colposcopia, con un manejo estrictamente confidencial de la información. Los datos se analizaron retomando su distribución y frecuencia por categorías de variable, con lo cual se buscó determinar la asociación de los factores con la presencia o no de lesiones neoplásicas al contrastarlos con los resultados de citología y colposcopia.

This article presents the results of an epidemiologic analytical-descriptive study whose objectives were to examine and determine how biological and psychosocial factors are associated to the presence of neoplastic lesions of the lower female genital tract in a teenage population in the department of Caldas. The study analyzed the distribution and frequency of the studied population in terms of sexuality, reproduction, cultural and psychosocial factors, and secondly, the interaction of risk factors in the occurrence of such injury. A sample of 269 women, selected after their involvement in educational sessions related to cervical cancer and breast cancer, was interviewed by means of a structured survey, which was filled-out directly by the researchers, with prior consent from the women. A cervical smear and a colposcopy were performed on each patient, confidentially handling the information. The data was analyzed taking into consideration the distribution and frequency of the variable categories, looking to determine the association of factors with the presence or absence of neoplastic lesions, when contrasted with the cervical smear and colposcopy results.

Em este artigo apresentam se os resultados duma pesquisa epidemiológica analítico-descritivo, cujos objetivos foram: conhecer e determinar como associam se fatores biológicos y psicossociais com a presença de lesões neoplásicas do conduto genital inferior feminino numa povoação adolescente do Departamento de Caldas, o qual se relacionou, por um lado, com a análise da distribuição e freqüência da povoação estudada em quanto a sexualidade, reprodução, fatores culturais e fatores psicossociais, e por outro lado, com a interação de fatores de risco na aparição de ditas lesões. Tomou se uma amostra de 269 mulheres, selecionadas depois de sua participação em jornadas educativas respeito ao câncer de colo uterino e mama. A este grupo aplicou se uma enquete estruturada, desenhada tal fim, a qual diligenciou se direitamente por os pesquisadores, prévio consentimento informado. A cada informante realizou se citologia e colposcopia, com um manejo estritamente confidencial da informação. Os dados realizaram se retomando sua distribuição e freqüência por categorias de variável, com o qual se procurou determinar a associação dos fatores com a presença ou não de lesões neoplásicas ao contrastarlos com os resultados de citologias e colposcopias.