Search Results for infection

..., swallowing, and speaking. In head and neck pathology, it also houses a rich lymphatic network with an organized system of abundant lymph nodes which are a common site for lymphomas, infections, and metastases. The neck can be thought of in many different ways: by components and compartments including...

... products, both smoked and smokeless products, alcohol consumption, oral submucous fibrosis, graft-versus-host disease, palatal lesions associated with reverse smoking, and high-risk HPV infection ( 66 ). Other risk factors include hematinic and micronutrient deficiency, lichen planus, and lupus...

... on chromosome 8 at band 8q24. Epstein-Barr virus (EBV) infection varies according to the epidemiologic subtype. Morphologically, it has a diffuse architecture, with a characteristic “starry-sky” pattern evident at low-power magnification due to the presence of many non-neoplastic phagocytic histiocytes...

... tract with draining sinus, often infected at presentation. The tract usually opens on two external surfaces: overlying skin and EAC. Most present as either a preauricular or immediately postauricular, painless, soft, compressible mass, commonly involving the parotid gland ( fig. 8-8 ) ( 27 , 29...

... in smokers and drinkers and in patients with chronic infections such as candidiasis or with immunosuppression, and lesions with and without dysplasia that are indistinguishable clinically. In the larynx, voice overuse, environmental exposures, and laryngopharyngeal reflux have also been implicated...

... of the nasopharynx, it has been known previously as lymphoepithelial carcinoma ( 41 – 44 ). EBV infection is the primary risk factor for nonkeratinizing NPC while smoking and alcohol consumption are the common risks for developing keratinizing NPC ( 40 ). Nonkeratinizing NPC represents over 95 percent of NPC cases...

... inflammatory polyp. General Features. Inflammatory polyps are most often seen as the result of allergic rhinosinusitis, but may also occur in the setting of infection, asthma, aspirin intolerance, cystic fibrosis, diabetes mellitus, and other conditions. Inflammatory polyps are encountered most frequently...

... is not the result of human papillomavirus (HPV) infection ( 53 , 54 ). Verrucous carcinoma can also arise in these cysts ( 55 ). Immunohistochemical Findings. Since PIOCs arise from odontogenic epithelium, CK19 is a sensitive marker for odontogenic origin, although malignant tumors may lose some reactivity ( 56...

... of adrenal enlargement include hemorrhages, cysts, amyloidosis, infections, and noninfectious inflammatory conditions. Each of these entities can be confusing both clinically and radiologically. In some cases, the clinical context and imaging characteristics allow for a presumptive diagnosis ( 1 – 3...

..., and atherosclerosis, which predispose to cardiovascular events that are more common in patients with this disorder. Less obvious changes include osteoporosis and immunosuppression that can cause poor wound healing and may lead to opportunistic infection. Neuropsychiatric disturbances may also be a complication...

... lymphadenitis Dissemination to multiple organs, with pyogranuloma formation Infection of placenta and uterus (numerous bacteria, with necrosis), mastitis, and orchitis B. melitensis Goats, sheep Isolated by D. Bruce (hence the genus Brucella) in 1887 in Malta Infection of the placenta...

... affects the left heart valves, particularly the aortic valve. B,C: There is often underlying valvular disease and organisms usually appear enmeshed in fibrin (B). Short hyphal forms may be seen in these lesions (C) (GMS stain). HISTOPLASMA CAPSULATUM VAR. DUBOISII INFECTION Figure 23-8...

...Table 27-1 PROTECTIVE AND PREDISPOSINGFACTORS FOR MALARIA Predisposing Factors Protective Factors Sickle cell disease Sickle cell trait Blood group B Hemoglobin C Pregnancy/postpartum Thalassemia HIV ^a infection Blood group O Malnutrition Duffy antigen...

... symptoms, with accentuated hypertension and poorly regulated blood glucose with increased precursor steroids such as DHEAS or others, may be clues to an underlying cortisol-producing ACC ( 55 ). Multiple opportunistic infections ( 56 ) or Kaposi sarcoma ( 57 ), possibly caused by cortisol-related...

..., poor wound healing, red to purple skin striae, weakness, hyperglycemia, hypertension, osteoporosis, and immunodeficiency leading to susceptibility to opportunistic infections. Based on the wide heterogeneity of clinical presentations, Cushing syndrome is often misdiagnosed or recognized after prolonged...

...Table 18-3 CLINICAL MANIFESTATIONS OF C. TRACHOMATIS INFECTIONS Infection Clinical Manifestations Complications Trachoma Chronic and recurrent keratoconjunctivitis Fibrosis of eyelids results in entropion (eyelid inversion, most frequently lower eyelid), trichiasis...