Partial splenectomy: A case series and systematic review of the literature

Splenic hamartomas in children

Splenic hamartomas (SHs) are uncommon, benign vascular lesions of unclear etiology and are mostly found incidentally on abdominal images, at surgery, or at autopsy. Since the first case description, in 1861, less than 50 pediatric SH cases have been reported in the literature. In this article, we have performed an analysis of all SH cases in children published in the literature to date and presented our case of an 8-year-old male with SH. These lesions in children were shown to cause symptoms more often than in the adult population. The observed SH sizes in children ranged from a few millimeters to 18 cm, and the symptomatic lesions were mostly larger or multiple. The most common clinical finding was splenomegaly. Signs of hypersplenism were present in children with a single SH larger than 4.5 cm (diameter range: 4.5-18.0 cm) and in those with multiple hamartomas, ranging from a few millimeters to 5 cm. Eighty percent of patients with available laboratory findings had hematological abnormalities such as anemia, thrombocytopenia, or pancytopenia. Other symptoms and signs included abdominal pain, recurrent infections, fever, night sweats, lethargy, growth retardation, and weight loss. The use of multiple imaging modalities may suggest the preoperative diagnosis of a splenic mass in children and determine the therapeutic approach. However, the final diagnosis of SH relies on histopathological evaluation. Surgery, including total or partial splenectomy (PS), is the mainstay of SH management. Although total splenectomy carries a greater risk of overwhelming post-splenectomy infection than PS it has remained the most performed surgical procedure in children with SH. In the majority of pediatric patients with symptomatic SH, resolution of symptoms and resolution or improvement of cytopenias occurred after surgical treatment.

Specific Spleen-Accumulated NIR-II Fluorescent Probe for Imaging-Guided Splenic Operation

Spleen is a large immune organ in the body. Splenic operations such as splenectomy and intrasplenic injection are of paramount importance for immunological research and splenic diseases. Fluorescence imaging can vastly simplify these operations, but a specific spleen-targeting probe is still unavailable. Herein, the first specific spleen-accumulated fluorescent probe, VIX-S is reported, which fluoresces at 1064 nm and is highly stable. Systematic studies reveal the superior targeting and imaging performance of VIX-S for the spleen in both nude and haired mice. In vivo imaging indicates that the probe can image the morphology of spleen with a signal-background ratio of at least two-fold higher than that of the liver. Moreover, the application of VIX-S in imaging-guided splenic operation, including splenic injury and intrasplenic injection, is demonstrated, which may provide a practice tool for spleen research in the animal model.

Role of Partial Splenectomy in Gaucher's Disease in Resource Challenged Nations

Context

Gaucher's disease (GD) is a rare inherited metabolic disorder caused by the defective activity of glucocerebrosidase. Enzyme replacement therapy (ERT) and substrate reduction therapy are the treatment of choice. Total splenectomy has a role when the child develops complications of massive splenomegaly. There are only a few case series of partial splenectomy in GD in the pediatric age group.

Aims

To study the role, technical feasibility, and challenges of partial splenectomy in children with GD with hypersplenism.

Materials and Methods

Retrospective review of children of GD who had partial splenectomy between February 2016 and April 2018. Demographics, clinical findings, laboratory, operative details, transfusion requirements, and perioperative, immediate, and late complications were retrieved. Clinical courses after discharge were obtained from follow-up data.

Results

Eight children with GD underwent partial splenectomy between 2016 and 2018. The median age at surgery was 3 years and 6 months (range -2 years to 8 years). Five children underwent partial splenectomy successfully, of which one child required postoperative ventilatory support for 48 h owing to lung atelectasis. Three children underwent completion splenectomy due to bleed from the cut surface of the splenic remnant. One of the children who underwent completion splenectomy expired on the postoperative day 5 due to refractory shock with multi-organ dysfunction.

Conclusion

Partial splenectomy has a definite role in selected children who present with massive splenomegaly with mechanical effects and/or hypersplenism while awaiting ERT.

Partial splenectomy after preoperative embolization in a patient with metastatic melanoma – A case report

Introduction and importance

There is lack of evidence regarding the best treatment option for metastatic melanoma. In patients with a single splenic metastasis, preoperative superselective embolization followed by partial splenectomy (PS) could be a feasible treatment strategy to preserve splenic function and hopefully reduce the risk of postoperative bleeding. To our knowledge, this two-step procedure has yet not been published in patients with splenic metastasis.

Case presentation

We present the case of a 73-year-old man with stage IV melanoma consisting of a single splenic metastasis located at the lower pole. Four days prior to surgery, the patient underwent percutaneous superselective embolization of the segmental arteries going to the lower splenic pole. Subsequent, PS was performed using an upper midline laparotomy were a clearly visible tumor was found at the devascularized lower third of the spleen. The splenic parenchyma was divided using an energy device and hemostasis was secured with diathermia and a hemostatic patch. The patient had an uncomplicated recovery and was discharged home on postoperative day 8. Histology revealed an 8 mm, partly necrotic metastasis from a melanoma. There were no signs of recurrency at his last control four months postoperative.

Clinical discussion

There are no guidelines on how splenic metastasis from melanoma are to be removed, nor any literature on postoperative splenic function or survival after PS.

Conclusion

Superselective embolization followed by PS for metastatic melanoma could be a feasible treatment approach in highly selective patients where there is a strong desire to preserve splenic function.

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Total splenectomy is associated with an increased risk of infections, thromboembolism and certain malignancies

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Partial splenectomy (PS) may be considered to preserve splenic function in cases where a splenic lesion is to be removed

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Preoperative superselective arterial embolization can be used to devascularize the relevant splenic segment prior to PS

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To our knowledge, superselective splenic embolization followed by PS has not been published in patients with splenic metastasis

Comparison of perioperative outcomes between laparoscopic and open partial splenectomy in children and adolescents

BACKGROUND

In order to avoid consequences of total splenectomy, partial splenectomy (PS) is increasingly reported. The purpose of this study was to compare perioperative outcomes of laparoscopic PS (LPS) and open PS (OPS) in children and adolescents.

AIM

To compare perioperative outcomes of patients with LPS and OPS.

METHODS

After institutional review board approval, a total of 26 patients that underwent LPS or OPS between January 2008 and July 2018 were identified from the database of our tertiary referral center. In total, 10 patients had LPS, and 16 patients underwent OPS. Blood loss was calculated by Mercuriali’s formula. Pain scores, analgesic requirements and complications were assessed. The Wilcoxon rank sum test was used for comparison. To compare categorical variables, Fisher’s exact test was applied.

RESULTS

LPS was performed in 10 patients; 16 patients had OPS. Demographics (except for body mass index and duration of follow-up), indicating primary disease, preoperative spleen size and postoperative spleen volume, perioperative hematological parameters, postoperative pain scores, analgesic requirements, adverse events according to the Clavien-Dindo classification and the comprehensive complication index, median time from operation to initiation of feeds, median time from operation to full feeds, median time from operation to mobilization and median length of hospital stay did not differ between LPS and OPS. Median (range) operative time (min) was longer in LPS compared to the OPS group [185 (135-298) vs 144 (112-270), respectively; P = 0.048]. Calculated perioperative blood loss (mL of red blood cell count) was higher in the LPS group compared to OPS [87 (-45-777) vs -37 (-114-553), respectively; P = 0.039].

CONCLUSION

This is the first study that compared outcomes of LPS and OPS. Both operative approaches had comparable perioperative outcomes. LPS appears to be a viable alternative to OPS.

Laparoscopic Partial Splenectomy: A Critical Appraisal of an Emerging Technique. A Review of the First 457 Published Cases

Background: Laparoscopic partial splenectomy (LPS) may allow avoiding total splenectomy (TS) complications and maximizing the advantages of mini-invasive approach. The objective of this review is to assess feasibility and safety of LPS, to compare this approach with alternative options. Materials and Methods: A literature review of articles reporting LPS is performed. Several parameters, including age, indication, surgical technique, devices used for splenic section/hemostasis, adverse outcomes, including morbidity/mortality, conversions to open surgery, conversions to TS, operative time (OT), and hospital stay (HS), are analyzed. Articles comparing LPS' results with those of open partial splenectomy and laparoscopic TS are also analyzed. Results: Fifty-nine articles reporting 457 LPS were included. Patients' characteristics varied widely, concerning age and indications, including hematological disease (hereditary spherocytosis, drepanocytosis), splenic focal masses, and trauma. Several technical options are reported. Mean OT and HS are 128 ± 43.7 minutes and 4.9 ± 3.8 days, respectively. No mortality and 5.7% morbidity are reported. Conversion rates to open surgery and to TS are 3.9% and 3.7%, respectively. Conclusions: In conclusion LPS is feasible and safe, with no mortality, low morbidity, and low conversion rates to laparotomy and to TS. LPS may be accomplished by various techniques and tools. Major complications are sporadically reported, thus potential risks should not be underestimated.

Splenic function is not maintained long-term after partial splenectomy in children with sickle cell disease

BACKGROUND

Partial splenectomy (PS) may allow preservation of splenic function in cases where splenectomy is indicated for hematologic diseases; however, the long-term outcomes are uncertain. We investigated the long-term outcomes of PS in patients with sickle cell disease (SCD).

METHODS

A single-institution retrospective chart review was performed for children with SCD who underwent PS from 1997 to 2017. For comparison, we reviewed outcomes for patients who underwent PS for hereditary spherocytosis (HS). The primary endpoint was viability of the splenic remnant as inferred by the presence of remnant perfusion on ultrasound and/or liver spleen scan.

RESULTS

Nine patients with SCD and 26 patients with HS underwent PS at a median age of 11 (IQR, 9-14) and 7.5 (IQR, 6-13) years, respectively. All underwent laparoscopic PS with three (7.9%) conversions to open. Two SCD patients were lost to long-term follow-up. The remaining seven SCD patients had initial postoperative splenic remnant perfusion demonstrated by ultrasonography. By 42 months postoperatively, however, none had a functioning splenic remnant. The median time to loss of splenic remnant was 12.6 (IQR 9.2-28.5) months. In contrast, all HS patients demonstrated robust splenic remnant blood flow with a median follow-up of 46 (IQR 37-82) months.

CONCLUSION

No patient with SCD who underwent PS had viable splenic tissue for more than 42 months, likely due to continued autoinfarction typical of patients with this disease. Therefore, we believe that PS to preserve splenic function is not indicated in patients with SCD.

LEVEL OF EVIDENCE

III.

Functional Evaluation of a Novel Microwave Surgical Device in a Canine Splenectomy Model

Aim: Partial splenectomy remains a difficult procedure even with the assistance of a sealing system. Recently, a scissor-like microwave energy device (Acrosurg) that provides seamless coagulation and manual cutting has been applied in surgery. The objective of this study is to evaluate the surgical capabilities of Acrosurg in partial splenectomy. Materials and Methods: Acrosurg and Harmonic Focus (HF) were employed for partial splenectomy in dogs without prior ligation of vessels. Cutting time, cutting area, and bleeding were recorded. Lateral thermal injury (LTI), possible complications was observed immediately and after 4 weeks. Results: The manual cutting mechanism of Acrosurg required a longer cutting time compared with the automatic cutting mode of HF (301.5 [243.2-527] vs. 114.5 [106.0-135.0] sec, p < 0.01). There was no statistical difference in cutting area or bleeding cases. Acrosurg achieved complete hemostasis in all cases, whereas the HF group failed to stop bleeding in two of the eight cases. The Acrosurg group exhibited a similar LTI compared with the HF group (3.0 [2.4-3.4] vs. 2.7 [2.3-2.9] mm, p = 0.151), but the LTI of the Acrosurg group tended to shrink more after 4 weeks (1.2 [1.0-1.3] vs. 1.7 [1.3-1.9] mm, p < 0.05). Conclusions: A microwave energy device enabled a partial splenectomy without vessel ligation. The combination of manual cutting and sealing capability helps not only provide an appropriate seal time by adjusting cutting timing adaptively but also potentially stop bleeding by using a microwave heating process unlike other energy devices.