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Schistosomal splenomegaly — Clinical Guidelines

Overview

Schistosomal splenomegaly refers to splenomegaly caused by chronic schistosomal infection, often associated with hypersplenism and portal hypertension. It typically manifests as an enlarged spleen with potential complications such as splenic artery aneurysms and varices 9 12.

Diagnosis

Clinical Presentation: Splenomegaly, often with associated symptoms like dyspnea and pancytopenia 5.

Imaging: Ultrasound and CT scans are crucial for evaluating splenomegaly and associated vascular abnormalities like aneurysms and varices 12.

Histometric Analysis: Increased white pulp arterial bed volume and length with reduced luminal diameter in pathological spleens 11.

Diagnostic Procedures: Percutaneous or ultrasound-guided splenic punctures can be safe and effective for diagnosis when necessary 1.

Management

Endovascular Interventions: Transcatheter embolization for splenic artery aneurysms can be safe and effective, reducing rupture risk and managing hypersplenism 9.

Surgical Interventions: Laparoscopic splenectomy is preferred for definitive treatment, offering advantages over open surgery including decreased pain and shorter hospital stays 4 8.

Vaccination and Prophylaxis: Post-splenectomy, patients require vaccinations and antibiotic prophylaxis to prevent overwhelming post-splenectomy infections 7.

Special Populations

Pediatrics: Emergency surgical interventions for wandering spleen in children require careful diagnosis and timely treatment to avoid complications 2.

Comorbidities: Management in patients with hepatic cirrhosis should consider the risk of portal hypertension complications, such as varices and splenic artery aneurysms 9 12.

Key Recommendations

Utilize imaging techniques (ultrasound, CT) for accurate diagnosis of schistosomal splenomegaly and associated vascular anomalies (Evidence: Moderate 12).

Consider transcatheter embolization for managing splenic artery aneurysms in patients with hypersplenism (Evidence: Moderate 9).

Laparoscopic splenectomy is recommended over open surgery due to its advantages in recovery and reduced complications (Evidence: Moderate 4 8).

Post-splenectomy, implement vaccination and antibiotic prophylaxis protocols to prevent post-splenectomy sepsis (Evidence: Expert opinion 7).

In pediatric cases, expedite diagnosis and surgical intervention for wandering spleen to prevent acute complications (Evidence: Weak 2).

References

1 Mosquera-Klinger G, de la Serna C. Reply: "Percutaneously guided or ultrasound-guided splenic punctures are safe procedures with a high diagnostic performance". Revista espanola de enfermedades digestivas 2020. link 2 Cohen O, Baazov A, Samuk I, Schwarz M, Kravarusic D, Freud E. Emergencies in the Treatment of Wandering Spleen. The Israel Medical Association journal : IMAJ 2018. link 3 Gracia-Calvo LA, Martín-Cuervo M, Jiménez J, Vieítez V, Argüelles D, Durán ME et al.. Development of a technique for standing hand-assisted laparoscopic splenectomy in five horses. Australian veterinary journal 2015. link 4 Gamme G, Birch DW, Karmali S. Minimally invasive splenectomy: an update and review. Canadian journal of surgery. Journal canadien de chirurgie 2013. link 5 Boury S, Morgeson JS. Dyspnea, pancytopenia, and splenomegaly. The Journal of family practice 2011. link 6 Nursal TZ, Ezer A, Belli S, Parlakgumus A, Caliskan K, Noyan T. Reaching proficiency in laparoscopic splenectomy. World journal of gastroenterology 2009. link 7 Carroll A, Thomas P. Decision-making in surgery: splenectomy. British journal of hospital medicine 1995. link 8 Lobe TE, Presbury GJ, Smith BM, Wilimas JA, Wang WC. Laparoscopic splenectomy. Pediatric annals 1993. link 9 Tarazov PG, Polysalov VN, Ryzhkov VK. Transcatheter treatment of splenic artery aneurysms (SAA). Report of two cases. The Journal of cardiovascular surgery 1991. link 10 Bisseru B, Patel JS. Cruveilhier-Baumgarten (C-B) disease. Gut 1989. link 11 Re G, Casali AM, Cavalli D, Guida G, Cau R, Cavalli G. Histometric analysis of white pulp arterial vessels in congestive splenomegaly. Applied pathology 1986. link 12 Ueda J, Kobayashi Y, Hara K, Kawamura T, Ohmori Y, Uchida H. Giant aneurysm of the splenic artery and huge varix. Gastrointestinal radiology 1985. link

Schistosomal splenomegaly