Meckel's diverticulum

Meckel's diverticulum, or Meckel's diverticulum, is an anomaly associated with residual tissues of the umbilical zone of the intestine, resulting from incomplete regression of vital structures during embryogenesis. This condition is characterized by the formation of a protrusion (diverticulum) from the wall of the small intestine, mainly in the ileum, which represents a remnant of the yolk sac celation. Meckel's diverticulum may contain tissue identical to that of the stomach or pancreas, which can lead to various pathologies, including inflammation, bleeding, and even perforation. In most cases, the diverticulum does not cause symptoms, but if complications arise, surgical intervention may be required.

Meckel's diverticulum was first described in 1809 by a German anatomist and surgeon named Aloysius Meckel, which is where the name of the pathology comes from. During the 19th century, this diverticulum was studied in the context of anatomy and surgery, but it was not until the 20th century that the medical community realized its clinical significance that it began to receive active attention. In 1949, Slovenian surgeon Binet wrote the first report on the diagnosis and treatment of diverticular disease. Interestingly, despite the historical study of diverticulum, many cases remain understudied due to their asymptomatic course, which complicates diagnosis and leads to delays in treatment.

Meckel's diverticulum is a fairly common anomaly, occurring, according to various data, in 2-3% of the population. According to statistical studies, among people with diverticula, only a small percentage of patients develop clinical manifestations. Meckel's diverticulum is most often diagnosed in children and young people, while it is less common among the elderly population. The basis for timely diagnosis are episodes of acute abdomen, especially in young patients, after which differential diagnosis is carried out taking into account the signs indicating the presence of a diverticulum.

There is no direct genetic predisposition to Meckel's diverticulum, but there are studies that indicate a possible role for hereditary factors. Mutations in genes responsible for normal intestinal development and structure have been described to date. It is known that various breakdowns in genes that interact with the regulation of cell division and development can lead to pathologies associated with diverticulum. For example, mutations in the β-catenin and APC genes are considered possible causes of abnormal intestinal tissue development, which may explain the presence of diverticulum in individuals with relatives who have similar diseases.

There are a number of physical and chemical factors that contribute to the development of Meckel's diverticulum. The main risk factors include:

• Incomplete regression of embryonic tissues, which is recorded during visualization of the diverticulum.
• Inflammatory bowel diseases, which can provoke inflammation of the diverticulum wall.
• The presence of concomitant developmental anomalies in the patient, such as umbilical cord vestibules.

In addition, factors that increase the general predisposition to gastrointestinal pathologies can also be triggers. For example, poor nutrition and fiber deficiency can aggravate the manifestations of diverticulitis.

Diagnosis of Meckel's diverticulum can be difficult because it may be asymptomatic. If clinical symptoms are present, it is important to consider the following aspects:

• The main symptoms are abdominal pain, which may resemble appendicitis, nausea, vomiting, and sometimes blood in the stool.
• Laboratory tests: blood test for inflammation (elevated white blood cell count) and possible symptoms of anemia.
• Radiologic tests: Ultrasound and CT scans can help visualize the diverticulum and surrounding inflammatory changes.
• Other types of diagnostics: use of magnetic resonance imaging in complex diagnostic situations.
• Differential diagnosis: exclusion of appendicitis, intestinal obstruction and other diseases.

Such a comprehensive assessment significantly increases the likelihood of a reliable diagnosis.

Treatment of Meckel's diverticulum depends on the clinical situation. In asymptomatic cases, active intervention is usually not required. In the presence of complications such as diverticulitis, the following is indicated:

• General treatment: bed rest, fasting diet, which may be introduced to reduce the load on the intestines.
• Pharmacological treatment: use of anti-inflammatory and analgesic drugs to relieve symptoms and reduce inflammation.
• Surgical treatment: If obvious complications arise, resection of the diverticulum or even the damaged section of the intestine may be required.
• Other treatments include probiotics to restore normal intestinal flora after surgery.

Each case requires an individual approach and careful planning of treatment measures.

The following groups of medications are used to treat Meckel's diverticulum:

• Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain relief and inflammation: Ibuprofen, Diclofenac.
• Antibiotics in case of secondary infection: Cephalexin, Amoxicillin.
• Stimulants of intestinal peristalsis: Motilium, Erythromycin for the restoration of motility.
• Probiotics for normalizing microflora after antibiotic treatment: Lactobacilli, Bifidobacteria.

The selection of drugs is carried out individually, taking into account the clinical indications of each patient.

Monitoring of patients with Meckel's diverticulum is a mandatory step, especially after surgical intervention. Key aspects of monitoring include:

• Control stages: regular examinations, blood tests to detect inflammatory processes or anemia, ultrasound examinations.
• Prognosis: With timely diagnosis and treatment, most patients have a good prognosis for a full life, however, cases of relapse require constant monitoring.
• Complications: Potential complications include perforation, intestinal obstruction and development of infections.

Thus, systematic monitoring is necessary for early detection of possible complications.

Meckel's diverticulum can occur in different age groups, but its characteristics may vary:

• In newborns and young children, diverticulum is most often asymptomatic and is discovered by chance during the diagnosis of other diseases.
• In adolescents and young adults, the first clinical symptoms may appear in the form of abdominal pain, which requires active clarification of the diagnosis.
• In older people it is observed much less frequently, however the pathology may manifest itself due to concomitant gastrointestinal diseases.

Therefore, it is important to consider age aspects when diagnosing and choosing treatment for this condition.