Secondary intestinal lymphangiectasia is a rare disorder that occurs when the lymphatic vessels in the small intestine become abnormally dilated. This can lead to a buildup of lymphatic fluid in the intestine, which can cause abdominal pain, diarrhea, and malabsorption of nutrients. Treatment typically involves dietary changes, medications, and sometimes surgery.

The most common symptoms of secondary intestinal lymphangiectasia include:

- Abdominal pain

- Diarrhea

- Weight loss

- Malnutrition

- Fatigue

- Abdominal bloating

- Nausea

- Vomiting

- Abdominal distention

- Abnormal stools

- Intestinal obstruction

- Protein-losing enteropathy

- Hypoalbuminemia

- Hypocalcemia

- Hypoproteinemia

- Edema

- Ascites

- Anemia

The exact cause of secondary intestinal lymphangiectasia is unknown, but it is believed to be caused by a variety of factors, including:

1. Congenital abnormalities of the lymphatic system
2. Damage to the lymphatic system due to surgery, radiation, or chemotherapy
3. Inflammatory bowel disease
4. Infections such as HIV or tuberculosis
5. Autoimmune diseases such as lupus or rheumatoid arthritis
6. Certain medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs)
7. Allergies
8. Parasitic infections
9. Genetic disorders such as Noonan syndrome or Turner syndrome

1. Dietary modifications: Dietary modifications are the mainstay of treatment for secondary intestinal lymphangiectasia. This includes avoiding foods that are high in fat, fiber, and lactose, as well as avoiding foods that are known to cause allergies or sensitivities.

2. Medications: Medications such as anti-diarrheal agents, antibiotics, and anti-inflammatory medications may be prescribed to reduce symptoms and improve absorption of nutrients.

3. Surgery: Surgery may be recommended in cases where dietary modifications and medications are not effective. Surgery may involve removing the affected portion of the intestine or creating a bypass to divert the flow of lymphatic fluid.

4. Intestinal transplant: In severe cases, an intestinal transplant may be recommended. This is a complex procedure that involves replacing the affected portion of the intestine with a healthy donor intestine.

The risk factors for secondary intestinal lymphangiectasia include:
* Congenital heart disease
* Celiac disease
* Crohn's disease
* Cystic fibrosis
* Intestinal surgery
* Radiation therapy
* Inflammatory bowel disease
* Immunodeficiency disorders
* Parasitic infections
* Allergic reactions
* Medications
* Genetic predisposition

Secondary intestinal lymphangiectasia is a rare condition that is not curable. Treatment focuses on managing the symptoms and complications of the condition. Medications that may be used to treat secondary intestinal lymphangiectasia include diuretics, antibiotics, anti-inflammatory drugs, and immunosuppressants. Surgery may also be used to treat the condition in some cases.