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Lecture 22 diseases of alimentary system
1.
Prof.Dr. Khalil Hassan Zenad Aljeboori Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Lecture
22 DISEASES OF ALIMENTARY SYSTEM
2.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Lesion of oral
cavity organ Congenital malformation inflammation Tumor (benign, malignant) The lips Cleft lip, maro, micro cheilia Viral, bacterial, spirochetal, protozoa, deficiency diseases Papilloma, squamous cell carcinoma,fibroma lipoma….. The mouth cleft palate, atresia of soft palate, marco and mirco stomia Viral, bacterial, spirochetal, mycotic protozoa ,leukoplakia Squamous cell carcinoma, sarcoma, mixed tumor angioma , papilloma, myoma The tongue Microglossia macroglossia aglossia, geographic tongue Clossitis, syphilis, tuberculosis, ulcer ,leukoplakia Sqaumous cell carcinoma, angioma, papilloma, myoma The gum 1.melanotic pigmentation, hematochromatosis 2.lead,bismuth, mercury Addison’s disease heavy metals. Tumors and inflammation similar to other part of mouth The teeth and jaw Anamolies of number, size, shape, eruption malocclusion…etc Dental caries, apical abscess Ameloblastoma, dintigerous cyst, adontoma The salivary glands Absence, cyst Parotitis, ranula, sjogren syndrome, sialolithiasis Mixed tumor, squamous cell carcinoma, adenoma, hemangio endothelioma The pharynx Tonsillitis, pharyngitis (bacterial diseases….) Sqaumous cell carcinoma transitional cell carcinoma lympho epithelioma, nasopharyngeal fibroma
3.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Congenital anomalies: 1. Atresia
with trachea-esophageal fistula. 2. Congenital shortening. 3. Heterotopic gastric mucosa. 4. Webs. Esophagus:
4.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Inflammation and
ulcerations: Follow swallowing or corrosive chemicals, T.B, peptic ulcer and varices at lower end in obstruction of portal circulation i.e. cirrhosis. Tumors: Benign are rare, malignant tumors are squamous cell carcinoma, adeno-carcinoma are rare, carcinoma 3% in Iraq of tumors. Obstruction: 1. Congenital 2. Post inflammatory fibrosis 3. Tumors 4. Cardio spasm or stricture of lower portion is due to spasm of cardiac sphincter. 5. Pressure from outside. Diverticula: May be of pulsion type due to pressure in esophagus forcing the wall outward at weak point, or due to traction by inflammation, adhesion to surrounding structures.
5.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Stomach: Congenital abnormalities: Congenital pyloric
stenosis, due to hypertrophy and spasm of muscle of pylorous with normal mucosa. Inflammations: Acute gastritis caused by various irritant food, alcoholic drinks, poisons. Chronic gastritis: 1. Chronic hypertrophic gastritis: in which thickening of mucosa and submucosa together with inflammatory cells infiltration. 2. Chronic atrophic gastritis: in which atrophy of mucosa and submucosa with inflammatory cells infiltration. It occur in case of pernicious anemia and in case of vitamin B deficiency in aged persons, achlorhydria and iron deficiency anemia are common features. It is precancerous condition.
6.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Ulcers of stomach: 1.
Acute ulcers 2. Chronic peptic ulcer 3. Acute ulcers: produced by a variety of injuries such as coarse and excessively hot foods, septicemia, extensive burn of skin, lobar pneumonia, cerebral veinous accidents, ulcers are usually pin point size, superficial multiples are more frequent in stomach than duodenum and often hemorrhage. 1. Chronic peptic ulcer: It refers to ulceration in areas which may be acted upon by acid gastric juice i.e stomach and first portion of duodenum. Etiology- two mechanisms: A. Devitalization of localized area of mucous. B. Constitutional predisposition. When there is achlorhydria due to pernicious anemia, peptic ulcer does not occur, changes in vascular supply (thrombosis and embolism), localized infection, influence of central nervous system. Recently autoimmunity has been involved as a possible etiology. 95% of ulcer occur in the magenstrase this region comparable to other regions of stomach is exposed to more trauma, lack protective mucin, and it subjected to greater muscle traction.
7.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Gross appearance: constant
location (pyloric, post wall, lesser curvature first portion of duodenum).Usually single size few mm to 3cm larger usually carcinomatous, peptic ulcer in duodenum is never a carcinoma indurated, deep, punched out or funnel shape, steep on cardiac side and sloping on pyloric side, the base is covered by necrotic, granulation tissue fibrosis around edge of ulcer which may lead to hourglass deformity of the stomach or pyloric stenosis. Microscopically: fibrosis, chronic inflammatory cells infiltration at the base and this is topped by a layer of granulation tissue which become necrotic toward the surface, endarteritis obliterans at the base. Clinical picture: pain after meal and relieve by taking alkalines. Complications: 1. Hemorrhage 2. Perforation 3. cicatricle contraction (hour glass and pyloric stenosis) 4. malignant transformation
8.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. 1.usually at pylorus
may be: a)congenital. b)sac of healed ulcer. c)carcinoma. 2.bezoar or concretion masses of (indigested material). Obstruction of stomach:
9.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Comparison of benign
and malignant gastric ulcer Ulcerative carcinoma Chronic ulcer(Benign) Duration History lesson than 2 years More than 2 years Age Past forty Under forty Size Over 2.5 cm Less than 2.5 cm Position Very near pylorous 2-3 inches from pylorous Edge Raised round Sharp, punched out Acidity Often hypoacidity Hyperacidity Blood group Carcinoma of stomach common in group A frequent in group O
10.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Benign tumors: Adenoma,
gastric polyp and benign myoma, benign tumor may arise from all layers of stomach (adenoma from mucosa, myoma from muscularis, fibroma from serosa). Malignant tumors: Carcinoma: constitute 5% of all malignancies in Iraq, among people group A between 50-60 years old. Tumors:
11.
Copyrights©2017lAliraqiaUniversitylDentistrylPathologylProf.Dr.KhalilHassanZenadAljeboori. Grossly: 1. papillary, polypoid,
cauliflower, fungated. 2. Scirrhous, infiltrating, diffuse fibrosis of the wall. 3. Ulcerative type. Microscopically: adenocarcinoma, scirrhous or mucoid types, secondary carcinoma transcoelomic spread in the ovaries, important site for metastasis tumor supraclavicular lymph node adjacent to thoracic duct. Hematemesis: vomiting of blood due to diseases of esophagus (varices and cancer) disease of stomach ulcer, cancer, disease of duodenum (peptic ulcer) and blood diseases. Melena= stool stained with blood pigment or altered blood. Main forms;
12.
PRESENTATION ENDS Copyrights © 2017
l Aliraqia University l Dentistry l Pathology l Prof.Dr. Khalil Hassan Zenad Aljeboori. THANKS FOR LISTENING
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