Lymph Nodes

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Lymph Nodes

Normal Lymph Node Histopathology • A lymph node contains a cortex, a paracortex, a medulla, sinuses, a hilum, and a fibrous capsule • The cortex is a B-cell area, which…

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Breast

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Breast

Subareolar Abscess Clinical Features • Develops in lactating and nonlactating breasts, usually in nonlactating breasts • Found in women of any age, typically during reproductive years • Can be seen…

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Soft Tissue

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Soft Tissue

Nodular Fasciitis Clinical Features • Primarily affects young adults aged 20 to 40 years; occasionally seen in children • Presents as a rapidly growing solitary mass; may be painful •…

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Hepatobiliary System

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Hepatobiliary System

Viral Hepatitis Clinical Features Hepatitis A Virus • Single-stranded RNA (ssRNA) virus (picornavirus) • Transmission route: fecal-oral • Incubation: 2 to 6 weeks • Self-limited • Not associated with chronic…

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Eye and Orbit

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Eye and Orbit

Adult Ocular Lesions External Lesions Malignant Melanoma of the Conjunctiva Clinical Features † Deceased • Usually pigmented (may be amelanotic), nodular, elevated lesion with vascularity, anywhere on conjunctiva • Usually…

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Spleen

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Spleen

Non-Neoplastic Diseases Involving the Splenic White Pulp Reactive Follicular Hyperplasia With Germinal Center Formation Clinical Features • Occurs at any age; more common in children and younger adults • Caused…

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Heart, Pericardium, and Blood Vessels

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Heart, Pericardium, and Blood Vessels

Heart Cardiomyopathy Clinical Features Hypertrophic Cardiomyopathy • Myocardial disease characterized by left ventricular hypertrophy in the absence of systemic hypertension, aortic valve stenosis, or overt infiltrative diseases • Associated with…

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Lung and Pleura

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Lung and Pleura

Non-Neoplastic Conditions Congenital Pulmonary Airway Malformation Clinical Features • Uncommon developmental anomaly predominantly seen in infants that has features of both immaturity and malformation of the airways and distal lung…

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Ureter, Urinary Bladder, and Kidney

Mar 11, 2021 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Ureter, Urinary Bladder, and Kidney

Ureter Ureteritis Cystica Et Glandularis Clinical Features • One of the most common non-neoplastic urothelial proliferations • Reactive urothelial proliferation that develops following an inflammatory stimulus • Typically asymptomatic and…

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