13.3 Body Systems, Pathology, and Diagnostic Language

System map

Recognizing roots helps locate meaning:

Myel/o can refer to spinal cord or bone marrow depending on the term. Context and authoritative spelling matter.

Injury and disease processes

Inflammation is a biological response and often appears with -itis. Infection involves a pathogen; inflammation is not always infection. Edema is swelling from fluid. Hemorrhage is bleeding. Thrombosis is clot formation; an embolus travels and obstructs elsewhere.

Ischemia is inadequate blood supply. Infarction is tissue death from loss of blood supply. Stenosis is narrowing; occlusion is blockage. An aneurysm is abnormal vessel dilation. These terms may occur in cardiac, vascular, or neurologic testimony and should not be collapsed into “heart attack” or “stroke” without the witness's wording.

Benign generally means nonmalignant; malignant refers to cancerous behavior. A neoplasm is new abnormal growth and can be benign or malignant. Metastasis is spread to another site. Remission is reduction or disappearance of disease signs; it does not always mean cure.

Musculoskeletal terms

A fracture is a bone break; dislocation separates joint surfaces; subluxation is partial displacement. A sprain affects ligaments; a strain affects muscle or tendon. Radiculopathy concerns a nerve root; neuropathy is broader nerve disease. A herniated disc, bulge, stenosis, and degenerative change are distinct descriptions. Record vertebral levels and laterality carefully.

Neurologic terms

A concussion is a form of traumatic brain injury. Aphasia impairs language; dysarthria impairs speech motor control. Paresis is weakness; plegia is paralysis. Hemiplegia affects one side, paraplegia generally lower body, and quadriplegia/tetraplegia all four limbs. A seizure is abnormal electrical activity; epilepsy is a disorder involving predisposition to seizures.

Diagnostic language

A positive test may indicate presence of the target; negative may indicate absence, but false positives and false negatives exist. Sensitivity reflects ability to detect a condition when present; specificity reflects ability to exclude those without it. A screening test evaluates risk or possible disease; a diagnostic test investigates a suspected condition.

Rule out often means the clinician is considering and evaluating a diagnosis, not that it has already been excluded. Provisional or working diagnosis is tentative. “Consistent with” is not always the same degree of certainty as “caused by.” Preserve qualification words: possible, probable, more likely than not, within reasonable medical certainty, cannot exclude.

Measurements

Capture unit and reference: blood pressure such as millimeters of mercury, temperature scale, heart rate per minute, glucose units, length, weight, percentage, or laboratory range. A value without unit can mislead. If an expert corrects a number, preserve the correction transparently.

Conflicting experts

One physician may attribute symptoms to trauma while another identifies degeneration. The reporter records each opinion and basis without choosing. Distinguish a doctor's reading of an image from the radiology report and a patient's history from an observed finding.

Sound-alike watch list

Ilium is pelvic bone; ileum is small intestine. Peroneal relates to the fibular side of the leg; perineal to the perineum. Afferent carries toward; efferent carries away. Dysphasia concerns language; dysphagia swallowing. Mark a timestamp and verify rather than relying on phonetic guesswork.

Exam approach

Break a term into parts, identify the body system, and preserve modifiers, laterality, numbers, and certainty. The reporter's skill is accurate recognition and verification, not medical judgment.

Exam application

Suppose one expert says an MRI is consistent with chronic degeneration while another says the same symptoms are more likely than not related to trauma. Preserve each source, qualification, body level, laterality, and degree of certainty. Do not reconcile them in the log as “caused by accident” or “preexisting.” If either expert cites measurements, include units and reference. The record must enable the fact-finder to compare opinions without inheriting an editorial conclusion from the reporter.

Review diagnostic modifiers carefully: a negative test does not always rule out disease, a provisional diagnosis is not final, and remission is not necessarily cure. Sound-alike terms such as ileum/ilium and dysphasia/dysphagia should trigger verification. The exam tests recognition and precise handling, not the ability to practice medicine.