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= Leiomyoma =
{{Infobox disease
| name = Leiomyoma
| image = Leiomyoma.jpg
| caption = Histological image of a leiomyoma
| field = [[Oncology]]
| synonyms = Fibroid, myoma
| symptoms = Often asymptomatic, but can include pain, bleeding, or pressure symptoms
| complications = Rarely, can transform into a [[leiomyosarcoma]]
| onset = Typically in reproductive age
| duration = Chronic
| causes = Unknown, but hormonal factors are implicated
| risks = Family history, obesity, early menarche
| diagnosis = [[Ultrasound]], [[MRI]], histological examination
| treatment = Observation, medication, surgery
| frequency = Common in women of reproductive age
}}


[[File:Leiomyoma Uterus 40x.jpg|thumb|right|Microscopic view of a Leiomyoma]]
'''Leiomyoma''' is a benign smooth muscle tumor that can occur in any organ but is most commonly found in the uterus, where it is often referred to as a [[uterine fibroid]]. Leiomyomas are the most common benign tumors in women and are typically discovered during the reproductive years.


Leiomyoma, commonly known as fibroids, is a noncancerous tumor originating from smooth muscle cells. Most frequently found in the uterus, leiomyomas can also develop in other areas with smooth muscles, such as the small intestine, esophagus, and stomach.
==Pathophysiology==
Leiomyomas are composed of smooth muscle cells and fibrous connective tissue. They arise from the smooth muscle layer of the uterus, known as the myometrium, but can also occur in other locations such as the esophagus, small intestine, and skin. The exact cause of leiomyoma development is not fully understood, but it is believed to be related to hormonal factors, particularly estrogen and progesterone.


== Definition and Characteristics ==
==Clinical Presentation==
Leiomyomas are benign growths that arise from smooth muscle tissue. They are composed of smooth muscle cells and fibrous connective tissue, exhibiting a whorled pattern in histological sections.
Many leiomyomas are asymptomatic and are discovered incidentally during pelvic examinations or imaging studies. When symptoms do occur, they may include:
 
* Abnormal uterine bleeding
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== Pathogenesis ==
The development of leiomyomas is not fully understood but involves complex genetic, hormonal, and environmental factors. They are estrogen and progesterone-sensitive, often growing during reproductive years and shrinking after menopause.
 
=== Genetic Factors ===
* Chromosomal abnormalities
* Gene mutations, especially in the MED12 gene
 
=== Hormonal Influence ===
* Estrogen and progesterone stimulate growth
* Growth may accelerate during pregnancy
 
== Clinical Presentation ==
Leiomyomas can range from asymptomatic to causing significant symptoms, including:
* Heavy or prolonged menstrual periods
* Pelvic pain or pressure
* Pelvic pain or pressure
* Frequent urination
* Frequent urination
* Difficulty emptying the bladder
* Constipation
* Constipation
* Infertility
==Diagnosis==
The diagnosis of leiomyoma is typically made through imaging studies such as [[ultrasound]] or [[magnetic resonance imaging]] (MRI). Histological examination of tissue samples can confirm the diagnosis.


== Diagnosis ==
[[File:Lipoleiomyoma2.jpg|thumb|Lipoleiomyoma, a variant of leiomyoma]]
Diagnosis of leiomyomas typically involves:
[[File:Colonic leiomyoma, low mag.jpg|thumb|Colonic leiomyoma under low magnification]]
* Pelvic examination
[[File:Beta-catenin immunohistochemistry in leiomyoma.jpg|thumb|Beta-catenin immunohistochemistry in leiomyoma]]
* Imaging modalities like ultrasound or MRI


== Treatment and Management ==
==Treatment==
Treatment depends on the size, location, and symptoms, as well as patient preferences. Options include:
Treatment options for leiomyoma depend on the size, location, and symptoms. They include:
* Medication for symptom management
* Observation for asymptomatic cases
* Hormonal treatments to shrink tumors
* Medications such as [[gonadotropin-releasing hormone]] (GnRH) agonists to shrink the tumors
* Surgical interventions such as myomectomy or hysterectomy
* Surgical options like myomectomy or hysterectomy
* Minimally invasive procedures like uterine artery embolization
* Minimally invasive procedures such as uterine artery embolization


== Epidemiology ==
==Prognosis==
Leiomyomas are the most common benign tumors in women of reproductive age, particularly prevalent among African American women.
Leiomyomas are benign and do not metastasize. However, they can cause significant symptoms and complications, such as anemia from heavy bleeding. Rarely, a leiomyoma may undergo malignant transformation into a [[leiomyosarcoma]].


== References ==
==Also see==
<references>
* [[Uterine fibroid]]
* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3897322/ "The Pathogenesis of Leiomyoma: New Opportunities for Innovative Therapies"] - NCBI
* [[Leiomyosarcoma]]
* [https://www.mayoclinic.org/diseases-conditions/uterine-fibroids/symptoms-causes/syc-20354287 "Uterine Fibroids Overview"] - Mayo Clinic
* [[Myomectomy]]
</references>
* [[Hysterectomy]]


[[Category:Benign Tumors]]
{{Reproductive system diseases}}
[[Category:Gynecology]]
{{Oncology}}
[[Category:Smooth Muscle Tissue Disorders]]


{{stub}}
[[Category:Benign tumors]]
[[Category:Gynecological disorders]]
[[Category:Smooth muscle disorders]]

Revision as of 02:42, 11 December 2024

Leiomyoma
Histological image of a leiomyoma
ICD-10
ICD-9
DiseasesDB
MedlinePlus
eMedicine
MeSH ID

Leiomyoma is a benign smooth muscle tumor that can occur in any organ but is most commonly found in the uterus, where it is often referred to as a uterine fibroid. Leiomyomas are the most common benign tumors in women and are typically discovered during the reproductive years.

Pathophysiology

Leiomyomas are composed of smooth muscle cells and fibrous connective tissue. They arise from the smooth muscle layer of the uterus, known as the myometrium, but can also occur in other locations such as the esophagus, small intestine, and skin. The exact cause of leiomyoma development is not fully understood, but it is believed to be related to hormonal factors, particularly estrogen and progesterone.

Clinical Presentation

Many leiomyomas are asymptomatic and are discovered incidentally during pelvic examinations or imaging studies. When symptoms do occur, they may include:

  • Abnormal uterine bleeding
  • Pelvic pain or pressure
  • Frequent urination
  • Constipation
  • Infertility

Diagnosis

The diagnosis of leiomyoma is typically made through imaging studies such as ultrasound or magnetic resonance imaging (MRI). Histological examination of tissue samples can confirm the diagnosis.

Lipoleiomyoma, a variant of leiomyoma
Colonic leiomyoma under low magnification
Beta-catenin immunohistochemistry in leiomyoma

Treatment

Treatment options for leiomyoma depend on the size, location, and symptoms. They include:

  • Observation for asymptomatic cases
  • Medications such as gonadotropin-releasing hormone (GnRH) agonists to shrink the tumors
  • Surgical options like myomectomy or hysterectomy
  • Minimally invasive procedures such as uterine artery embolization

Prognosis

Leiomyomas are benign and do not metastasize. However, they can cause significant symptoms and complications, such as anemia from heavy bleeding. Rarely, a leiomyoma may undergo malignant transformation into a leiomyosarcoma.

Also see



Reproductive system diseases
STIs/STDs
Male
Female
Pregnancy complications
Infertility


This 'Reproductive system diseases' related article is a stub.



Oncology
Basics
Diagnostics
Treatments
Types of Cancers
Related Fields
This oncology-related article is a stub.
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