Category: F
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Fetal uterus
A uterus that is retarded in development and possesses an extremely long cervical canal. A uterus that has not reached the typical size expected for the woman’s age.
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Follicular ulcer
A tiny ulcer originating in a lymph follicle and affecting a mucous membrane.
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Functioning tumor
A tumor, that is able to synthesize the same product as the normal tissues from which it arises, especially an endocrine or nonendocrine tumor that produces hormones.
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False tumor
An enlargement due to hemorrhage into tissue or extravasation of fluid into a space, rather than cancer.
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Follicular tuberculid
A cutaneous eruption characterized by the presence of groups of follicular lesions, especially on the trunk.
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Fibrous tubercle
A fibrous tissue that has replaced a previously inflamed area.
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Focal trough
A three-dimensional area within which structures are accurately reproduced on a panoramic radiograph. Positioning the patient within the focal trough is critical to producing a panoramic radiograph that clearly reproduces oral structures.
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Frontal triangle
The triangle bounded by the maximum frontal diameter and the lines joining its extremities and the glabella.
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Facial triangle
The triangle bounded by the lines uniting the basion and the alveolar and nasal points, and one uniting the nasal and basion.
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Forced tremor
A tremor continuing after voluntary motion has ceased.