From HPO
Vascular granular osmiophilic material deposition- MedGen UID:
- 348472
- •Concept ID:
- C1859833
- •
- Finding
Accumulation of granular osmiophilic material in blood vessel walls. Osmiophilic material becomes black upon staining with osmium tetroxide. Deposition of granular osmiophilic material (GOM) is the vascular pathological hallmark of CADASIL, which is the most prevalent hereditary small vessel disease and is caused by missense mutations in the NOTCH3 gene. GOM have been shown to contain NOTCH3 ectodomain (NOTCH3ECD) and extracellular matrix proteins, and can be visualized ultrastructurally in the tunica media of small arteries and capillaries. These electron dense GOM deposits are located in the basement membrane of mural cells, i.e. vascular smooth muscle cells and pericytes. In both manifest and pre-manifest CADASIL patients, GOM deposits are present not only in brain vessels, but also in vessels of other organs, such as the skin.
Cerebellar ataxia- MedGen UID:
- 849
- •Concept ID:
- C0007758
- •
- Disease or Syndrome
Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).
Depression- MedGen UID:
- 4229
- •Concept ID:
- C0011581
- •
- Mental or Behavioral Dysfunction
Frequently experiencing feelings of being down, miserable, and/or hopeless; struggling to recover from these moods; having a pessimistic outlook on the future; feeling a pervasive sense of shame; having a low self-worth; experiencing thoughts of suicide and engaging in suicidal behavior.
Hallucinations- MedGen UID:
- 6709
- •Concept ID:
- C0018524
- •
- Mental or Behavioral Dysfunction
Perceptions in a conscious and awake state that, in the absence of external stimuli, have qualities of real perception. These perceptions are vivid, substantial, and located in external objective space.
Spasticity- MedGen UID:
- 7753
- •Concept ID:
- C0026838
- •
- Sign or Symptom
A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
Myoclonus- MedGen UID:
- 10234
- •Concept ID:
- C0027066
- •
- Finding
Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.
Seizure- MedGen UID:
- 20693
- •Concept ID:
- C0036572
- •
- Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Sleep abnormality- MedGen UID:
- 52372
- •Concept ID:
- C0037317
- •
- Sign or Symptom
An abnormal pattern in the quality, quantity, or characteristics of sleep.
EEG abnormality- MedGen UID:
- 56235
- •Concept ID:
- C0151611
- •
- Finding
Abnormality observed by electroencephalogram (EEG), which is used to record of the brain's spontaneous electrical activity from multiple electrodes placed on the scalp.
Cerebral atrophy- MedGen UID:
- 116012
- •Concept ID:
- C0235946
- •
- Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
Loss of speech- MedGen UID:
- 107445
- •Concept ID:
- C0542223
- •
- Finding
Global developmental delay- MedGen UID:
- 107838
- •Concept ID:
- C0557874
- •
- Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Psychomotor deterioration- MedGen UID:
- 373191
- •Concept ID:
- C1836842
- •
- Finding
Loss of previously present mental and motor abilities.
Irritability- MedGen UID:
- 397841
- •Concept ID:
- C2700617
- •
- Mental Process
A proneness to anger, i.e., a tendency to become easily bothered or annoyed.
Intellectual disability- MedGen UID:
- 811461
- •Concept ID:
- C3714756
- •
- Mental or Behavioral Dysfunction
Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.
Increased neuronal autofluorescent lipopigment- MedGen UID:
- 892355
- •Concept ID:
- C4025728
- •
- Finding
Lipofuscin, a generic term applied to autofluorescent lipopigment, is a mixture of protein and lipid that accumulates in most aging cells, particularly those involved in high lipid turnover (e.g., the adrenal medulla) or phagocytosis of other cell types (e g., the retinal pigment epithelium or RPE; macrophage). This term pertains if there is an increase in the neuronal accumulation of lipofuscin (also known as autofluorescent lipoprotein) more than expected for the age of the patient.
Hypotonia- MedGen UID:
- 10133
- •Concept ID:
- C0026827
- •
- Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.
Flexion contracture- MedGen UID:
- 83069
- •Concept ID:
- C0333068
- •
- Anatomical Abnormality
A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.
Secondary microcephaly- MedGen UID:
- 608952
- •Concept ID:
- C0431352
- •
- Finding
Head circumference which falls below 2 standard deviations below the mean for age and gender because of insufficient head growth after birth.
Progressive microcephaly- MedGen UID:
- 340542
- •Concept ID:
- C1850456
- •
- Anatomical Abnormality
Progressive microcephaly is diagnosed when the head circumference falls progressively behind age- and gender-dependent norms.
Generalized hypotonia- MedGen UID:
- 346841
- •Concept ID:
- C1858120
- •
- Finding
Generalized muscular hypotonia (abnormally low muscle tone).
Vacuolated lymphocytes- MedGen UID:
- 332307
- •Concept ID:
- C1836855
- •
- Finding
The presence of clear, sharply defined vacuoles in the lymphocyte cytoplasm.
Abnormality of metabolism/homeostasis- MedGen UID:
- 867398
- •Concept ID:
- C4021768
- •
- Finding
Macular degeneration- MedGen UID:
- 7434
- •Concept ID:
- C0024437
- •
- Disease or Syndrome
A nonspecific term denoting degeneration of the retinal pigment epithelium and/or retinal photoreceptor cells of the macula lutea.
Optic atrophy- MedGen UID:
- 18180
- •Concept ID:
- C0029124
- •
- Disease or Syndrome
Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.
Retinal degeneration- MedGen UID:
- 48432
- •Concept ID:
- C0035304
- •
- Finding
A nonspecific term denoting degeneration of the retinal pigment epithelium and/or retinal photoreceptor cells.
Blindness- MedGen UID:
- 99138
- •Concept ID:
- C0456909
- •
- Disease or Syndrome
Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.
Decreased light- and dark-adapted electroretinogram amplitude- MedGen UID:
- 326793
- •Concept ID:
- C1839025
- •
- Finding
Descreased amplitude of eletrical response upon electroretinography.
Progressive visual loss- MedGen UID:
- 326867
- •Concept ID:
- C1839364
- •
- Finding
A reduction of previously attained ability to see.
Undetectable electroretinogram- MedGen UID:
- 383742
- •Concept ID:
- C1855685
- •
- Finding
Lack of any response to stimulation upon electroretinography.
- Abnormality of metabolism/homeostasis
- Abnormality of the cardiovascular system
- Abnormality of the eye
- Abnormality of the immune system
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system