Introduction

Lymphangiomas are rare, benign malformations of the lymphatic system, typically presenting as fluid-filled cysts beneath the skin or within deeper tissues.^3,1 While often asymptomatic, these lesions can be complicated by episodes of infection and bleeding, which significantly impact patient management and outcomes.^1,4,5 Infection may arise when bacteria invade the cystic spaces, leading to symptoms such as pain, fever, and localized inflammation.⁴ Bleeding, on the other hand, occurs when fragile lymphatic vessels rupture, either spontaneously or following minor trauma, resulting in the accumulation of blood within the cyst or surrounding tissues.^1,5 Understanding the mechanisms and clinical implications of infection and bleeding in lymphangiomas is essential for timely diagnosis and effective treatment.¹

Overview of Lymphangiomas

Lymphangiomas is most commonly diagnosed in children and account for approximately 4% of all vascular tumors, and 25% of benign vascular tumors in pediatric populations.³ The most frequent locations include head, neck, axilla, and internal organs.

Types of Lymphangiomas

• Lymphangioma circumscriptum: Superficial, vesicle-like papules on the skin¹
• Cavernous lymphangioma: Deeper, sponge-like masses
• Cystic hygroma: Large, cystic lesions, often in the neck

Pathophysiology of Infection and Bleeding

Infection

Lymphangiomas, especially those with superficial vesicles or deep cystic components, are susceptible to infection. The thin-walled cysts can rupture, providing a portal of entry for bacteria. Infections may be localized or, in severe cases, lead to systemic involvement.⁴ The most commonly isolated organisms include Staphylococcus aureus and other skin flora.⁴

Bleeding

Bleeding in lymphangiomas typically results from trauma, spontaneous rupture of fragile vessels within the lesion, or secondary infection that erodes vascular walls.⁵ Orbital lymphangiomas, for example, can bleed into themselves, forming “chocolate cysts” filled with blood, leading to acute swelling and pain.⁵

Clinical Manifestations

Symptoms of Infection

•  Localized redness, warmth, and swelling
•  Pain or tenderness
•  Fever and malaise in systemic infection
•  Serous  drainage if vesicles rupture^2,4

Symptoms of Bleeding

•  Sudden enlargement of the lesion
•  Discoloration (bluish or dark red) due to blood accumulation
•  Acute pain, especially in confined spaces like the orbit⁵
•  Leakage of blood-tinged fluid from ruptured vesicles^2,1

Complications

•  Cellulitis and abscess formation
•  Sepsis in severe, untreated cases
•  Compression of adjacent structures (e.g., airway obstruction, vision loss)
•  Chronic ulceration and delayed healing⁷

Case Example: Infected Lymphangioma

A notable case involved a 40-year-old woman with lymphangiomatosis who developed an intrathoracic lymphangioma infection. She presented with high fever and imaging revealed an enlarged cystic lesion with new septations. Cultures confirmed Staphylococcus aureus infection. Management included drainage and intravenous antibiotics, with surgical intervention to remove viscous material and septa, resulting in clinical improvement.⁴

Diagnosis

Diagnosis of infection and bleeding in lymphangiomas is based on:

• Clinical examination: Identification of signs of inflammation, fluctuance, and discoloration
• Imaging: Ultrasound, computer tomography (CT), or magnetic resonance imaging (MRI) to assess lesion extent, internal hemorrhage, or abscess formation⁵
• Laboratory tests: Blood cultures and aspirate cultures in suspected infection⁴
• Histopathology: May be required for atypical presentations or to rule out malignancy¹

Management Strategies

Infection

• Antibiotic therapy: Empiric broad-spectrum antibiotics, tailored based on culture results⁴
• Drainage: Percutaneous, surgical drainage for abscesses
• Supportive care: Analgesia, antipyretics, and wound care

Bleeding

• Observation: Minor, self-limiting bleeds may only require monitoring
• Surgical intervention: Indicated for significant hemorrhage, especially in critical locations (e.g., orbit, airway)¹
• Debulking surgery: May be necessary for recurrent bleeding
• Laser therapy: Used for superficial lesions to control bleeding and reduce recurrence¹

Prognosis

The prognosis for patients with lymphangiomas complicated by infection or bleeding is generally favorable with timely and appropriate management. However, recurrent infections or hemorrhage can lead to chronic morbidity, including scarring, functional impairment, or, in rare cases, life-threatening complications.^3,5

Conclusion

Infection and bleeding are significant complications of lymphangiomas, necessitating a multidisciplinary approach for optimal outcomes. Early recognition, appropriate antimicrobial therapy, and surgical intervention when indicated are critical to preventing long-term sequelae. Ongoing research into minimally invasive therapies and improved diagnostic techniques continues to enhance the care of patients with these challenging vascular anomalies.

FAQs

What is a lymphangioma?

A lymphangioma is a rare, noncancerous, fluid-filled mass caused by overgrown lymph vessels, often appearing as a cyst under the skin.

Are lymphangiomas dangerous?

Most lymphangiomas are benign and do not cause serious problems. However, complications such as infection or bleeding can occur, especially if the cyst is large or located near vital organs.

How do infections occur in lymphangiomas? 

Infections can develop if bacteria enter the lymphangioma, leading to redness, swelling, pain, and sometimes fever. Infection is an uncommon but recognized complication.

What causes bleeding in lymphangiomas?

Bleeding may occur spontaneously or after trauma. Sometimes, blood can leak into the cyst, causing it to suddenly enlarge or change color.

What are the symptoms of infection or bleeding in a lymphangioma?

Symptoms may include pain, rapid swelling, redness, warmth, or discoloration of the mass. In the case of gastrointestinal lymphangiomas, symptoms can include abdominal pain, melena (black stools), or anemia.