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{{Tuberous sclerosis}}
{{Tuberous sclerosis}}
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==Overview==
Tuberous sclerosis is a disease that presents with a wide spectrum of clinical manifestations. With appropriate medical care, most individuals can expect normal life expectancy.


==Natural History, Complications, Prognosis==
==Natural History==
 
===Natural History===
* Those individuals with mild symptoms generally do well and live long productive lives, while individuals with the more severe form may have serious disabilities.  
* Those individuals with mild symptoms generally do well and live long productive lives, while individuals with the more severe form may have serious disabilities.  
* However, with appropriate medical care, most individuals with the disorder can look forward to normal life expectancy.
* However, with appropriate medical care, most individuals with the disorder can look forward to normal life expectancy.


===Complications===
==Complications==
 
==== Ocular ====
 
* Retinal astrocytic hamartomas (tumors of the retinal nerve) may cause blindness, but this is not a common presentation.
 
====Renal====
 
* Renal angiomyolipomas (present in 60-80% of the TSC patients), benign tumors composed of abnormal vessels, smooth-muscle cells and fat cells which may cause hematuria. These tumors can be detectable in early childhood by MRI, CT or ultrasound. Although benign, in TSC they are commonly multiple and bilateral. Angiomyolipomas larger than 4 cm are at risk for potentially catastrophic hemorrhage either spontaneously or with minimal trauma;
* Epithelial cysts;
* Polycystic kidney disease (as 2-3% of the patients carries a deletion that affects both TSC2 gene and one of the genes that lead to autosomal dominant polycystic kidney disease);
* Renal-cell carcinomas that may be diagnosed at a younger age (mean 28 years);<ref name=":0" /><ref name=":1">Crino PB, Nathanson KL, Henske EP (September 2006). "The tuberous sclerosis complex". ''The New England Journal of Medicine''. '''355''' (13): 1345–56. [[Digital object identifier|doi]]:10.1056/NEJMra055323. <nowiki>PMID 17005952</nowiki>.</ref>
* Patients ≥18 years may have higher rates of chronic kidney disease, hematuria, kidney failure, embolization (EMB), and partial and complete nephrectomy compared to patients <18 years.<ref>Song, Xue, et al. "Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma." ''Current medical research and opinion'' 33.7 (2017): 1277-1282.</ref>
 
====Pulmonary====
 
* Lymphangiomyomatosis affects mostly women and is a proliferation of smooth-muscle cells that may result in cystic changes in the lungs. Recent genetic analysis has shown that the proliferative bronchiolar smooth muscle in TSC-related lymphangioleiomyomatosis is monoclonal metastasis from a coexisting renal angiomyolipoma. Cases of TSC-related lymphangioleiomyomatosis recurring following lung transplant have been reported.<ref>Henske EP (December 2003). "Metastasis of benign tumor cells in tuberous sclerosis complex". ''Genes, Chromosomes & Cancer''. '''38''' (4): 376–81. [[Digital object identifier|doi]]:10.1002/gcc.10252. <nowiki>PMID 14566858</nowiki>.</ref> Diagnosed mostly during early adulthood, may cause pneumothorax.
 
* Multifocal micronodular pneumocyte hyperplasia can occur in both men and women and are mostly asymptomatic.<ref name=":0" /><ref name=":1" />
 
====Neurologic====
These manifestations are one of the major causes of morbidity in patients with TSC.


* Epilepsy, which is the most common neurological presentation occurring in 70-80% of patients and may complicate with infantile spasms, a severe form of epileptic syndrome. If epilepsy presents with an early onset t is associated with cognitive disabilities, which are also very prevalent in such patients. In 2020 a paper showed that epilepsy remission by appropriate treatment in early life can possibly prevent autism and intellectual disability.<ref>Gupta, Ajay, et al. "Epilepsy and neurodevelopmental comorbidities in tuberous sclerosis complex: a natural history study." ''Pediatric Neurology'' (2020).</ref>
* Common complications of tuberous sclerosis include:
* Neuropsychiatric disorders are present in two-thirds of the patients and anxiety is one of the most common presentations. Autism is one possible manifestation and is especially associated with cerebral cortical tubers. It consists of neurologic tissue that grows in a different pattern, losing the normal six-layered cortical structure, with dysmorphic neurons, large astrocytes and giant cells.
**[[Blindness]] (due to retinal astrocytic hamartomas);<ref name="pmid31417327">{{cite journal| author=Wan MJ, Chan KL, Jastrzembski BG, Ali A| title=Neuro-ophthalmological manifestations of tuberous sclerosis: current perspectives. | journal=Eye Brain | year= 2019 | volume= 11 | issue=  | pages= 13-23 | pmid=31417327 | doi=10.2147/EB.S186306 | pmc=6592065 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=31417327  }}</ref>
* Subependymal nodules;
**[[Internal bleeding]] (due to ruptured [[Angiomyolipoma|angiomyolipomas]]);
* Subependymal giant cell astrocytomas, which may cause obstructive hydrocephalus. Risk of such benign tumors decreases after age of 20.<ref name=":1" /><ref name=":0" />
**[[Renal-cell carcinomas]];<ref name="pmid170059523">{{cite journal| author=Crino PB, Nathanson KL, Henske EP| title=The tuberous sclerosis complex. | journal=N Engl J Med | year= 2006 | volume= 355 | issue= 13 | pages= 1345-56 | pmid=17005952 | doi=10.1056/NEJMra055323 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17005952  }}</ref><ref name="pmid272262342">{{cite journal| author=Henske EP, Jóźwiak S, Kingswood JC, Sampson JR, Thiele EA| title=Tuberous sclerosis complex. | journal=Nat Rev Dis Primers | year= 2016 | volume= 2 | issue=  | pages= 16035 | pmid=27226234 | doi=10.1038/nrdp.2016.35 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=27226234  }}</ref>
**[[Chronic kidney disease]];<ref name="pmid28358266">{{cite journal| author=Song X, Liu Z, Cappell K, Gregory C, Said Q, Prestifilippo J | display-authors=etal| title=Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma. | journal=Curr Med Res Opin | year= 2017 | volume= 33 | issue= 7 | pages= 1277-1282 | pmid=28358266 | doi=10.1080/03007995.2017.1313726 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=28358266  }}</ref>
**[[Lymphangiomyomatosis]];
** Multifocal micronodular pneumocyte hyperplasia;<ref name="pmid170059523" />
**[[Epilepsy]], including its more severe form: [[infantile spasms]];
**[[Obstructive hydrocephalus]] due to [[subependymal]] giant cell [[astrocytomas]];
**[[Anxiety Disorder|Anxiety]];
**[[Autism]];<ref name="pmid170059523" />
**[[Heart failure]] due to intracavitary cardiac [[rhabdomyomas]].<ref name="pmid25424575">{{cite journal| author=Hinton RB, Prakash A, Romp RL, Krueger DA, Knilans TK, International Tuberous Sclerosis Consensus Group| title=Cardiovascular manifestations of tuberous sclerosis complex and summary of the revised diagnostic criteria and surveillance and management recommendations from the International Tuberous Sclerosis Consensus Group. | journal=J Am Heart Assoc | year= 2014 | volume= 3 | issue= 6 | pages= e001493 | pmid=25424575 | doi=10.1161/JAHA.114.001493 | pmc=4338742 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25424575  }}</ref>


====Cardiovascular====
==Prognosis==
Rhabdomyomas may be present, being intramural or intracavitary in its distribution along the myocardium. May be detected in utero on fetuses and is associated with cardiac failure. Often disappear spontaneously in later life.<ref name=":0" />  80% of children under two-years-old with TSC have at least one rhabdomyoma, and about 90% of those will have several.<ref>Hinton RB, Prakash A, Romp RL, Krueger DA, Knilans TK (November 2014). "Cardiovascular manifestations of tuberous sclerosis complex and summary of the revised diagnostic criteria and surveillance and management recommendations from the International Tuberous Sclerosis Consensus Group". ''Journal of the American Heart Association''. '''3''' (6): e001493. [[Digital object identifier|doi]]:10.1161/JAHA.114.001493. [[PubMed Central|PMC]] 4338742. <nowiki>PMID 25424575</nowiki>.</ref>
* The prognosis for individuals with TSC depends on the severity of symptoms, which range from mild skin abnormalities to varying degrees of learning disabilities and [[epilepsy]] to severe [[mental retardation]], uncontrollable [[seizures]], and [[kidney failure]].
===Prognosis===
* The prognosis for individuals with TSC depends on the severity of symptoms, which range from mild skin abnormalities to varying degrees of learning disabilities and epilepsy to severe mental retardation, uncontrollable seizures, and [[kidney failure]].


==References==
==References==

Latest revision as of 15:07, 20 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: José Eduardo Riceto Loyola Junior, M.D.[2]

Overview

Tuberous sclerosis is a disease that presents with a wide spectrum of clinical manifestations. With appropriate medical care, most individuals can expect normal life expectancy.

Natural History

  • Those individuals with mild symptoms generally do well and live long productive lives, while individuals with the more severe form may have serious disabilities.
  • However, with appropriate medical care, most individuals with the disorder can look forward to normal life expectancy.

Complications

Prognosis

  • The prognosis for individuals with TSC depends on the severity of symptoms, which range from mild skin abnormalities to varying degrees of learning disabilities and epilepsy to severe mental retardation, uncontrollable seizures, and kidney failure.

References

  1. ↑ Wan MJ, Chan KL, Jastrzembski BG, Ali A (2019). "Neuro-ophthalmological manifestations of tuberous sclerosis: current perspectives". Eye Brain. 11: 13–23. doi:10.2147/EB.S186306. PMC 6592065 Check |pmc= value (help). PMID 31417327.
  2. ↑ 2.0 2.1 2.2 Crino PB, Nathanson KL, Henske EP (2006). "The tuberous sclerosis complex". N Engl J Med. 355 (13): 1345–56. doi:10.1056/NEJMra055323. PMID 17005952.
  3. ↑ Henske EP, Jóźwiak S, Kingswood JC, Sampson JR, Thiele EA (2016). "Tuberous sclerosis complex". Nat Rev Dis Primers. 2: 16035. doi:10.1038/nrdp.2016.35. PMID 27226234.
  4. ↑ Song X, Liu Z, Cappell K, Gregory C, Said Q, Prestifilippo J; et al. (2017). "Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma". Curr Med Res Opin. 33 (7): 1277–1282. doi:10.1080/03007995.2017.1313726. PMID 28358266.
  5. ↑ Hinton RB, Prakash A, Romp RL, Krueger DA, Knilans TK, International Tuberous Sclerosis Consensus Group (2014). "Cardiovascular manifestations of tuberous sclerosis complex and summary of the revised diagnostic criteria and surveillance and management recommendations from the International Tuberous Sclerosis Consensus Group". J Am Heart Assoc. 3 (6): e001493. doi:10.1161/JAHA.114.001493. PMC 4338742. PMID 25424575.
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