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Clinical Features of Segmental Infantile Hemangioma: A Prospective Study

Authors Qiu T, Yang K, Dai S, Chen S, Ji Y

Received 8 November 2020

Accepted for publication 11 January 2021

Published 27 January 2021 Volume 2021:17 Pages 119—125

DOI https://doi.org/10.2147/TCRM.S291059

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 4

Editor who approved publication: Professor Deyun Wang


Tong Qiu,1 Kaiying Yang,1 Shiyi Dai,1 Siyuan Chen,2 Yi Ji1

1Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu 610041, People’s Republic of China; 2Pediatric Intensive Care Unit, Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu 610041, People’s Republic of China

Correspondence: Yi Ji
Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, #37# Guo-Xue-Xiang, Chengdu 610041, People’s Republic of China
Fax +86 28 85423453
Email jijiyuanyuan@163.com

Background: Infantile hemangioma (IH) is the most common benign tumor in children. However, few studies have reported the clinical features of segmental IH. We aimed to determine the clinical characteristics of segmental IH and to identify features that may aid clinicians in managing segmental IH.
Methods: In the cross-sectional prospective study approved by the Ethics Committee of the hospital, children diagnosed with IH were recruited, and information including patient demographics, IH morphology and anatomical location, complications and treatments were recorded and analyzed.
Results: In total, 153 patients with segmental IH and 1375 patients with nonsegmental IH were enrolled in this study. The average age on the day of the first visit in patients with segmental IH was 3.63± 3.23 months. In 69 patients (45.10%), segmental IH was diagnosed at birth. Most segmental IHs (49.67%) occurred in the limbs, while only 22.04% of nonsegmental IHs occurred in the extremities (P< 0.001). Thirteen patients (8.50%) with segmental IH had ulceration. Compared with patients with nonsegmental IHs, patients with segmental IHs were more likely to be treated with oral drugs (P< 0.001).
Conclusion: Segmental IHs mainly occur in the extremities and are frequently diagnosed at birth. Segmental IHs are usually accompanied by ulceration, which are more commonly seen in the neck and perineal/perianal/genital areas than nonsegmental IHs. Oral propranolol is prescribed more often in patients with segmental IH than in those with nonsegmental IH.

Keywords: segmental infantile hemangioma, clinical features, complications, treatment, ulceration

Introduction

Infantile hemangioma (IH) is the most common benign tumor in children, with an incidence of 4–5%. IH is more common in females than in males.1 Most IHs are small and usually gradually subside without treatment; however, some special types of IHs need the attention of clinicians and standardized treatment. The latest clinical practice guidelines for the management of IH were established by the American Academy of Pediatrics (AAP) in 2019. The AAP guideline defines a hemangioma larger than 5 cm in diameter as segmental IH.2 Segmental IH is a high-risk type of IH. It may be associated with serious complications, such as ulceration and airway involvement,3,4 and can also be accompanied by structural abnormalities. However, there are only a few large-sample studies reporting the clinical characteristics of segmental IHs. In addition, the differences in clinical features between segmental IH and nonsegmental IH have not been well explored. Therefore, we conducted a prospective cross-sectional study to investigate the clinical features of segmental IH, with the aim of increasing the understanding of segmental IH and preventing morbidity.

Patients and Methods

The Infantile Hemangioma Research Group of West China Hospital of Sichuan University launched a prospective study on IH from October 2017 to August 2019. The study was approved by the Ethics Committee of West China Hospital of Sichuan University. All the researchers had been trained about the research program and on data collection. Written informed consent was obtained from all the patients’ parents. The researchers registered samples of all IH patients who were treated at urgent care visits and in the inpatient or outpatient clinic of West China Hospital of Sichuan University. Information including patient sex, age at the first visit, date of IH onset, growth stage of IH, type of IH, anatomic location of IH, complications, location of ulceration, and current treatment regimens was collected. The study has been registered at www.clinicaltrial.gov (NCT03331744). The posterior fossa, hemangioma, arterial lesions, cardiac abnormalities/aortic coarctation, and eye abnormalities (PHACE) syndrome and lower body hemangioma, urogenital abnormalities/ulceration, myelopathy, bony deformities, anorectal malformations/arterial anomalies, and rectal anomalies (LUMBAR) in children with segmental hemangioma will be further elaborated and explained in our follow-up study.

The inclusion criteria of this study were as follows: patients aged 0–1 year with a diagnosis of IH. Patients were excluded if they had received any previous treatment, if they were diagnosed with congenital hemangioma or vascular malformation, or if some clinical information was unavailable. Hemangioma lesions were classified by soft-tissue depth as superficial, mixed or deep. Superficial IHs were measured vertically with a soft tape measure (cm2), while mixed and deep IH types were measured by ultrasound. The longest diameter was considered the final value. For patients with multiple hemangioma lesions, detailed information was obtained for the most clinically important hemangioma (typically the largest or most ulcerated lesion). Segmental IH was defined as IH involving a broad anatomic region that often appeared plaque-like and measured more than 5 cm in diameter.2 According to this definition, IH patients were divided into the segmental IH group and the nonsegmental IH group. The differences between these two groups were analyzed. As for high-risk IHs defined by AAP2 or IHs treated with oral medication, we would follow up for at least 6 months for children with IH who were assessed as high-risk IHs or received oral drug therapy.

The data were calculated by IBM SPSS Statistics 25.0 software. The qualitative data of the two groups were analyzed by Χ2 test or Fisher’s exact test. The quantitative data were analyzed by Student’s t-test. Differences were considered statistically significant when the P value was <0.05.

Results

Patient Demographics

A total of 1584 patients were screened for eligibility, and 1528 patients with IH met the criteria for inclusion and were ultimately enrolled in the study (Figure 1). There were 1375 patients with nonsegmental IH and 153 patients with segmental IH. There were no significant differences in the demographic characteristics between segmental IH and nonsegmental IH groups. The average age at the first visit in patients with nonsegmental IH and segmental IH was 3.41 ± 2.73 months and 3.63 ± 3.23 months, respectively (Table 1).

Table 1 Clinical Features of the Nonsegmental IH and Segmental IH Groups

Figure 1 Study flowchart of allocation protocol for segmental IH and nonsegmental IH.

IH Morphology and Anatomical Location

Through a detailed questionnaire, we gathered information about the time when the IH was first noted. The presence of a hemangioma precursor at birth was more often noted in patients with segmental IH patients than in nonsegmental IH patients (P<0.001) (Figure 2). With regard to the subtypes of IH, superficial IH occurred more frequently in the nonsegmental IH group (P<0.001), while mixed IH occurred more frequently in the segmental IH group (P<0.001). In 49.67% of the patients with segmental IH, the lesions were located on the extremities, while only 22.04% of nonsegmental IHs were located on the extremities (P<0.001). Nonsegmental IHs mainly occurred in the head and face area (Figure 3), while segmental IHs involving the head and face area (Figure 4) were less common (39.71% vs 16.34%, P<0.001) (Table 1).

Figure 2 Segmental IH of the right lower limb: It showed a dark red plaque with telangiectasia at birth (A) and a bright red plaque with clustered red papule at the age of 3 weeks (B).

Figure 3 A four-week-old patient with focal IH was treated with oral propranolol.

Figure 4 Segmental IH of the face and head: it showed a facial segmental IH with a telangiectatic red macule during involuting stage (A); and a mixed segmental IH with bluish tumor below the red plaque, causing visual field cut. This patient has previously been treated with topical timolol before referral (B).

Complications

Ulceration was the most common complication of IHs. We found that ulcerations occurred more frequently in segmental IHs than in nonsegmental IHs (8.50% vs 4.07%, P=0.012). Segmental neck and perineal/perianal/genital IHs were more likely to develop ulcers than nonsegmental IHs (Table 2). In addition, segmental IHs were more likely to cause airway obstruction than nonsegmental IHs (P<0.001). Five cases (3.27%) of segmental IH occurred in the facial beard area or the deep parotid gland, resulting in airway obstruction due to involvement of the pharynx and larynx (Table 2).

Table 2 Distribution of Ulcerated Infantile Hemangioma Locations

Treatments

After evaluating the situations of the high-risk patients and the treatment requests of the patients’ family members at the first visit to our hospital, we determined that more segmental IH patients (127, 83.01%) required treatment than nonsegmental IH patients. Among the 26 (16.99%) patients who did not receive treatment, 6 patients were in a stable plateau phase, and 11 patients were in an involuting phase. Seven segmental IHs were located on the extremities. They were superficial and were not associated with serious complications such as ulcers. The other two patients’ lesions were located on the right waist and behind the right ear. Their parents refused any treatment. The patients with segmental IHs were more inclined to receive early oral drug interventions than nonsegmental IH patients (P<0.001). Propranolol at a dose of 2 to 3 mg/kg per day was administered in 105 (68.63%) of 153 segmental IH patients (Table 3).

Table 3 Treatment Differences Between Nonsegmental IH and Segmental IH Groups

Discussion

The characteristic growth curves of most IHs are nonlinear.1 After a period of 1–3 weeks, an IH begins to proliferate, and the rapid growth period of an IH is often within the first 3 months of life;5,6 accordingly, the tumors may not be noticed until after birth. Because of the large focal areas of segmental IHs and the involvement of one or more anatomical structures, the possibility of detection at birth is greatly increased. However, the precursors of segmental IHs observed at birth may be difficult to distinguish from capillary malformation (CM).7,8 Segmental IHs generally initially present as reticular dilated capillaries, while typical IH manifestations such as red plaques or elevated red papule-like IHs gradually appear with increasing age. In addition, some segmental IHs with arrested growth do not show evident proliferation in the postnatal period. Therefore, segmental IHs, which are challenging to identify, need close follow-up and additional observation, with the aim of providing timely intervention and treatment.

Primary care service providers may not be able to evaluate and manage high-risk IHs such as segmental IHs independently. Ideally, the primary care doctors should refer high-risk IH patients to an IH specialist within 4–6 weeks or at least consult an IH specialist for treatment.2 As a tertiary institution, there was no significant difference in the age at the first outpatient visit or first referral between the segmental IH patients and nonsegmental IH patients. Some patients might not be able to receive timely professional evaluation and treatment or early, frequent and close monitoring. Such delayed referrals greatly delay the evaluation and treatment of patients with high-risk IHs. Some patients may even develop ulcers or serious complications before being referred to a tertiary medical center, so the best time for treatment might be missed, affecting the long-term prognosis of the disease. Therefore, the importance of early identification of segmental IHs and timely referral by primary care doctors is emphasized. The risk assessment and referral timing of no bedridden patients with diseases such as segmental IH are very important. Telemedicine platforms,9 high-quality referral scoring tools,10 the score for assessing the response to propranolol treatment11 and some other new clinical tools for monitoring IHs12 should be reasonably used to benefit children with IH.

Studies on the clinical characteristics of IH have found that the most common IH sites are the head and face,6,13–16 but the “biker-glove” pattern proposed by Weitz NA,17 which is a characteristic of segmental IH, was more common in the extremities, coinciding with our conclusion. In our study, nearly half of the segmental IHs occurred in the limbs, while only 25 patients had segmental IHs on the head and face, accounting for 16.34%. The anatomical distribution of segmental IHs was significantly different from that of nonsegmental IHs.

Segmental IH was more often accompanied by complications than nonsegmental IH. Ulceration was one of the most common complications. There was a high incidence of ulcers in IHs on the neck fold area, lip mucous membrane and perineal/perianal/genital area. Especially in the perineal/perianal/genital area, the probability of ulcers was greatly increased due to repeated friction and the presence of bacteria and irritants from urine and feces.4,18 When segmental IH occurs in these high-risk ulcer sites, clinical follow-up and daily nursing care by parents, such as changing diapers frequently, reducing friction in the focal area, and so on, should be improved. Ensuring that parents are aware of the risk of ulcers is also important. If ulcers occur, the care of local ulcerated wounds should be strengthened by administering external antimicrobial agents, such as mupirocin ointment, in addition to oral propranolol for IH.19,20 Segmental IH located in the beard area often involves the pharynx and larynx, thus greatly increasing the risk of airway obstruction.3,21

As a high-risk type of IH, segmental IH has a high possibility of inducing structural abnormalities, such as PHACE syndrome and LUMBAR syndrome.4,8,22 In addition, segmental IH may be associated with a higher risk of concomitant hepatic hemangioma than nonsegmental IH. Our ongoing studies involving comorbidity screening in patients with segmental IH could provide additional information in the future.

This study has several limitations. One limitation of the study was that the study population was entirely composed of patients seeking medical evaluation or treatment for IH at one tertiary medical center. Therefore, our patients might not be representative of the general IH population. Second, information about participants’ socioeconomic status was not available. Whether socioeconomic status is associated with the timely referral of patients with IH is still unknown. Third, our study did not include information about treatment responses and IH involution. Finally, multiple focal lesions received surgical treatment. Perhaps these lesions may spontaneously involute or respond well to propranolol if they had not been resected.

Conclusion

With the deepening of the understanding of IH, the requirements for the evaluation and management of IH are becoming increasingly standardized. However, there is little research on high-risk segmental IH. Therefore, it is of great importance for pediatricians, primary care doctors and general practitioners to fully understand the clinical characteristics of segmental IH, properly identify segmental IH, carry out timely referrals and take steps to provide early interventions.

Data Sharing Statement

Whole data and material needed to support our findings were included in the paper and available for publication.

Ethics Approval and Informed Consent

Written informed consent was obtained from all the patients’ parents according to the provisions of the Declaration of Helsinki.

Consent for Publication

All the patients or patients’ parents signed an informed consent form for the submission to the journal.

Author Contributions

All authors made a significant contribution to the work reported, whether that is in the conception, study design, execution, acquisition of data, analysis and interpretation, or in all these areas; took part in drafting, revising or critically reviewing the article; gave final approval of the version to be published; have agreed on the journal to which the article has been submitted; and agree to be accountable for all aspects of the work.

Funding

This work was supported by the National Natural Science Foundation of China (81401606, 81400862), the Key Project in the Science & Technology Program of Sichuan Province (2019YFS0322), the Science Foundation for The Excellent Youth Scholars of Sichuan University (2015SU04A15), and the 1·3·5 Project for Disciplines of Excellence-Clinical Research Incubation Project of West China Hospital of Sichuan University (2019HXFH056, 2020HXFH048). YJ and SYC as the funders participated in providing the original idea of the work, drafting and revising the manuscript.

Disclosure

The authors report no conflicts of interest in this work.

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