Category C - Diseases

Subheadings

/psychology Used with non-psychiatric diseases for psychologic, psychiatric, psychosomatic, psychosocial, behavioral, and with psychiatric disease for psychologic aspects.

Anxiety in Parkinson disease patients
PARKINSON DISEASE / *psychol
*ANXIETY
HUMAN (check tag)

/economics Used for the economic aspects of diseases.

Economic burden of chronic obstructive pulmonary disease
PULMONARY DISEASE, CHRONIC OBSTRUCTIVE / *econ
*COST OF ILLNESS

/classification Used for systematic or hierarchical classification systems.

Classification of different types of dementia
DEMENTIA / *class

/history Used for the historical aspects of diseases.

Malaria in the 19th century
MALARIA / *hist
HISTORY 19th CENTURY
HISTORICAL ARTICLE (PT)

/veterinary Used for naturally occurring diseases in animals.

Pseudomonas infections in cattle
PSEUDOMONAS INFECTIONS / *vet
*CATTLE DISEASES
CATTLE (check tag)
ANIMAL (check tag)

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Neoplasm Subheadings

The following subheadings are permitted in Category C only with neoplasm terms.

/ultrastructure Used with neoplasms for microanatomic structures, generally below the size visible by light microscopy.

Microtubule structure in large cell carcinoma of the lung
LUNG NEOPLASMS / *ultrastruct
CARCINOMA, LARGE CELL / *ultrastruct
MICROTUBULES / *ultrastruct

/blood supply Used for blood vessels in neoplasms.

Microvascular ultrastructure of colonic tumors
COLONIC NEOPLASMS / *blood supply
MICROVESSELS / *ultrastructure

/secondary Used with neoplasms to indicate the secondary location to which the neoplastic process has metastasized.

Metastasis of breast adenocarcinoma to the lung
LUNG NEOPLASMS / *second
ADENOCARCINOMA / *second
BREAST NEOPLASMS / *pathol

/chemistry Used for the chemical composition or content of tumors.

Presence of metallothionein in brain tumors
BRAIN NEOPLASMS / *chem
METALLOTHIONEIN / *anal

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