الفهرس 
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Abstract
The subject of pathological affections in dogs and cats is of great concern to the veterinarian because much of this work deals with these new growths. Better understanding of this subject helps to control the majority of routine and critical medical decisions The present work, aimed to study the pathological affections to make an idea about the various types of affections and their target organs in both sexes of dogs and cats at Alexandria province on the bases of the gross and histopathological findings The present study was done on, a total number of 127 animals, in Alexandria Province, that were examined for pathological affections (58 dogs and 69 cats The total lesions were 203. The highest percentage was found in female reproductive affections (29.06%) followed by skin and skin glands affections (27.59%), digestive affections (15.27%), urinary affections (8.37%), hematopoietic affections (5.91%), respiratory affections (5.42%), eye and ear affections (5.42%) and then cardiovascular affections (1.48%) and musculoskeletal affections (1.48%). The highest number of affections was detected in cats (124 of 203) (61.08%), then dogs (79 of 203) (38.92%). Female animals were more affected (73.23%), than the male ones (22.83%). The diseased cases of female cats (78.26%) were higher than the female dogs (67.24%). Regarding animal breeds, German shepherd dogs (31.03%) and Persian cats (53.62%) were the most affected animals The most common recorded pathological conditions in the examined digestive organs were present in liver, biliary system represented mainly by hepatic lipidosis (cats specimens 5.64%, dogs specimens 2.53%), circulatory disturbance in liver (dogs specimens 1.26%, cats specimens 2.42%), chronic cholangiohepatitis (cats specimens 2.42%) and hydropic degeneration (cats specimens 0.80%) followed by gastrointestinal organs represented by necrotic enteritis (cats specimens 1.61%, dogs specimens 1.26%), catarrhal enteritis (cats specimens 4.03%), chronic gastritis (cats specimens 0.80%), ulcerative gastritis (cats specimens 0.80%) and colitis (cats specimens 0.80%) followed by oral cavity represented by papilloma (dogs specimens 1.26%) and granulomatous glossitis (dogs specimens 1.26%) and then pancreas represented mainly by circulatory disturbance (cats specimens 0.80%). pathological conditions in the examined respiratory organs were present in lungs represented mainly by pulmonary emphysema (cats specimens 1.61%, dogs specimens 2.53%), bronchointerstitial pneumonia (dogs specimens 2.53%, cats specimens 0.80%), serofibrinous pneumonia (dogs specimens 1.26%), bronchiolitis (cats specimens 0.80%), circulatory disturbance (cats specimens 0.80%) followed by tracheitis (cat specimens 0.80% The most common recorded pathological conditions in the examined urinary organs were present in kidneys represented mainly by nephrosis (cats specimens 3.22%, dogs specimens 2.53%), chronic interstitial nephritis (cats specimens 4.03%), tubulonecrosis (dogs specimens 1.26%), suppurative nephritis (dogs specimens 1.26%) and chronic glomerulonephritis (cats specimens 0.80%) followed by lower urinary tract represented by chronic polypoid cystitis (cats specimens 2.42%). The most common recorded pathological conditions in the examined hematopoietic organs were spleen lesions represented mainly by splenic lymphoid depletion/necrosis (cats specimens 4.03%) and splenic hemosiderosis (cats specimens 1.61%) followed by Lymph node lesions represented mainly by lymphoid depletion/necrosis (dogs specimens 3.79%) followed by lymph node hemosidrosis (dogs specimens 1.26%) and lymphoid hyperplasia (cats specimens 0.80%). The most common recorded pathological conditions in the examined cardiovascular organs were heart lesions represented mainly by circulatory disturbance (cats specimens 2.42%). The most common recorded pathological conditions in the examined musculoskeletal were chondrofibroma (dogs specimens 1.26%), fibrosarcoma-osteochondroma (dogs specimens 1.26%) and rhabdomyoma (dogs specimens 1.26%). The most common recorded pathological conditions in the examined skin and skin glands were adnexal structures tumors represented mainly by cystic-papillary adenocarcinoma (cats specimens 6.45%, dogs specimens 5.06%), mammary adenofibroma (dogs specimens 5.06%), mammary fibroadenocarcinoma (dogs specimens 3.79%), solid carcinoma (dogs specimens 1.26%, cats specimens 0.80%), mammary fibrosarcoma (dogs specimens 1.26 %), mammary chondrosarcoma (dogs specimens 1.26%), malignant trichoepithelioma (dogs specimens 1.26%), anal sac gland fibroadenoma (dogs specimens 1.26%), sebaceous gland adenocarcinoma (dogs specimens 1.26%) followed by non-epithelial tumors represented mainly by canine transmissible venereal tumor (dogs specimens 8.86%), fibroma (dogs specimens 3.79%, cats specimens 0.80%), lipoma (dogs specimens 2.53%, cats specimens 0.80%), histiocytoma (dogs specimens 3.79%), fibrosarcoma (dogs specimens 2.53%), fibroadenocarcinoma (dogs 2.53%), lipofibroma (dogs specimens 1.26 %), myxolipoma (dogs specimens 1.26 %) followed by epithelial tumors represented mainly by squamous cell carcinoma (dogs specimens 1.26 %) and basal cell carcinoma (cats specimens 0.80%) followed by inflammatory lesions represented mainly by abscess (dogs specimens 2.53 %), mammary gland hypertrophy (cats specimens 1.61%) and anal sacculitis (cats specimens 0.80% The most common recorded pathological conditions in the examined uteri were chronic endometritis (cats specimens 15.32%, dogs specimens 5.06%) followed by uterine neoplasms (cats specimens 2.42%, dogs specimens 3.79%), acute endometritis (cats specimens 3.22%, dogs specimens 1.26%) and disturbance in circulation (cats specimens 1.61%). In chronic endometritis, polypoid represented (cats specimens 4.03%, dogs specimens 1.26%) while cystic (cats specimens 5.64%, dogs specimens 3.79%). Pyometra represented (cats specimens 5.64%) among the examined uteri. uterine neoplasms [Fibroadenoma (cats specimens 0.80%), papillary cystadenocarcinoma (cats specimens 1.61%, dogs specimens 3.79%)] represented a considerable incidence among uterine lesions in our study Cystic Ovaries was the most prevalent pathological conditions among the recorded ovarian lesions (cats specimens 4.83 %, dogs specimens 3.79%) represented mainly by follicular cysts (cats specimens 4.83 %, dogs specimens 1.26% ), cystic corpus luteum (dogs specimens 1.26%) and cystic rete ovarii (dogs specimens 1.26%) followed by ovarian neoplasms (cats specimens 4.83%) represented mainly by papillary cystadenoma (4.03%) and Granulosa theca cell tumor (0.80%) followed by persistent corpus luteum (cats specimens 1.61%, dogs specimens 3.79%), circulatory disturbance (cats specimens 1.61%) and oophoritis (cats specimens 0.80%). The most common recorded pathological conditions in the examined eye were suppurative scleritis (dogs specimens 1.26%), prolapsed nictating gland (dogs specimens 1.26%), suppurative uveitis (cats specimens 2.42%), nonsuppurative uveitis (cats specimens 3.22%), nonsuppurative panophthalmitis (cats specimens 0.80%), chronic keratitis (cats specimens 0.80%) followed by ear represented in myxofibroma (cats specimens 0.80%).