#medical pathology

• Acropathology — A specialized branch of medical pathology or a niche clinical discipline dealing with the systematic study, diagnosis, anatomical description, and treatment of all diseases, structural anomalies, injuries, and functional disorders localized within the extremities of the body (hands, feet, and digits).
• Actinopathy — A structural medical term used to define any pathological state, skin lesion, or systemic condition directly caused by prolonged, accidental, or therapeutic exposure to light radiation, ultraviolet rays, or ionizing radiation (X-rays and gamma rays). Actinopathy encompasses conditions ranging from acute radiodermatitis and severe sunburns to deep cellular degenerative changes or actinic cataracts induced by aggressive radiant fluxes.
• Aeropathy — A general medical term used to designate any pathological condition, organic affection, or physiological disorder directly caused by sudden atmospheric pressure variations, abnormal chemical composition of inhaled air, or high-altitude exposure. This clinical category structurally includes decompression sickness in divers and pilots, altitude hypoxia, and barotrauma.
• Agenesis — The congenital absence of an organ, tissue, or body part, caused by the failure of its development during embryonic life. Unlike aplasia, where the embryonic bud exists but fails to fully mature, in this severe structural anomaly the initial blueprint of the organ is completely missing from the genetic profile.
• Amoebic — Relating to amoebae, of the nature of amoebae, or caused by amoebae; a structural adjective describing biological processes (locomotion, movement), pathological manifestations (infections, abscesses), or parasitic species associated with protozoans of the class Rhizopoda.
• Amyloid — The feminine form of the adjective 'amiloid', used to describe a substance, degeneration, senile plaque, or organic infiltration that exhibits the structural, physicochemical, or tinctorial characteristics of amyloid. It is frequently encountered in established medical phrases such as 'amyloid substance' or 'amyloid plaque', indicating the presence of pathological protein polymers.
• Anaplasia — A pathological cellular condition characterized by the complete loss of structural and functional differentiation of cells within a tissue, causing them to revert to a primitive, embryonic-like form. This phenomenon represents a major indicator of tumor malignancy, being associated with an accelerated rate of cell division, severe nuclear atypia, and a profound alteration of the normal architecture of the affected organ.
• Anasarca — A severe clinical syndrome characterized by generalized and massive edema, consisting of the pathological and excessive accumulation of serous fluid throughout the subcutaneous cellular tissue, accompanied by fluid effusions in the major serous cavities of the body (pleura, pericardium, peritoneum). This critical structural state represents an advanced manifestation of serious disorders, such as decompensated heart failure, nephrotic syndrome, decompensated liver cirrhosis, or severe protein malnutrition.
• Arytenoiditis — An acute or chronic inflammatory process localized within one or both arytenoid cartilages or the mucosa covering them in the posterior region of the larynx. This structural condition, often infectious, traumatic, or induced by severe gastroesophageal reflux, manifests clinically through dysphonia (hoarseness), odynophagia (painful swallowing), and an annoying foreign body sensation in the throat.
• Arrhythmia — A disruption of the normal heart rhythm, characterized by an alteration in the frequency, regularity, or sequence of cardiac contractions. This structural and electrophysiological anomaly occurs when the electrical impulses that coordinate heartbeats do not function properly, causing the heart to beat too fast (tachycardia), too slow (bradycardia), or completely irregularly (such as atrial fibrillation).
• Asphyxial — Causing asphyxia, relating to asphyxia, or presenting its clinical features; suffocating. In a structural and pathological sense, it describes chemical factors, gases, obstructive phenomena, or abnormal respiratory states that block air from entering the lungs or the correct oxygenation of the blood.
• Asthenia — A pathological state of chronic fatigue, profound exhaustion, and decreased muscular strength, accompanied by a diminution of physical and mental energy that does not disappear after rest; it manifests as a core symptom during seasonal transitions or within endocrine, neurological, or infectious conditions.
• Avitaminosis — A serious pathological state caused by the total lack or profound and prolonged deficiency of one or more vitamins in the organism, stemming from an unbalanced diet, intestinal malabsorption, or metabolic disorders. This structural condition disrupts vital biochemical cellular functions, leading to the onset of specific well-defined diseases, such as scurvy, pellagra, rickets, or beriberi.
• Bacillosis — A generic term used in medicine and pathology to denote any pathological condition, infection, or disease specifically caused by the multiplication and spread of bacilli within the body. This structural bacterial condition can affect both human and animal tissues (such as in certain apicultural or livestock pathologies), often requiring rapid therapeutic interventions with targeted antimicrobial agents.