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The effects of Bleomycin A5 on infantile maxillofacial haemangioma
© Luo and Zhao; licensee BioMed Central Ltd. 2011
Received: 15 March 2009
Accepted: 7 July 2011
Published: 7 July 2011
To examine the effects of bleomycin A5 on infantile maxillofacial haemangiomas.
Bleomycin A5 was given by multiple intralesinoal injections and the dosage was given according to the age of the patient and size of the lesion. Parts of patients were accompanied by prednisone treatment(2-5 mg/kg, po, QOD.
All the haemangiomas involuted completely after treated with bloemycin A5 with better recovery of skin color and less scar forming in small haemangiomas.
Infantile haemangioma could be effectively treated with bleomycin A5 without serious side effects.
Infantile hemangiomas are the most common tumor of infancy, which are benign vascular proliferations composed of densely packed capillaries with endothelial cells and pericytes expanding in a lobular pattern. In contrast to vascular malformations, infantile hemangiomas are usually absent or inconspicuous at birth and are characterized by a remarkably rapid postnatal proliferation and slow spontaneous involution. Although infantile haemangiomas can involute spontaneously, it is still difficult to predict the progression of some infantile haemangioma, even small lesions may result in major aesthetic handicap at certain sites, especially for the big infantile haemangiomas (> 4 cm), as it may develope to the extant of maxillofacial deformity and follow with complications (usually bleeding, ulceration, or obstruction). Therefore, some clinicians suggest that interfering in infantile haemangioma should be at the early stage[1–3]. Conservative therapies for infantile haemangiomas include pharmacotherapy, laser therapy and consulting doctors regularly.
Bleomycin (BLM, also known as Blenoxane) was first isolated as a Cu2+-containing glycooligopeptide antibiotic from the culture medium of streptomyces verticullust. It was soon found to be an anticancer agent and has ever since become one of the most widely used anticancer drugs[4–6].
New application of bleomycin A5 was found recent years, that it was also used in treating haemangioma[1–3]. Conrad Pienaar and his colleagues treated hemangioma with a standard injection of bleomycin of 0.3 to 0.6 mg/kg per injection. 73% patients had a response rate greater than 75% reduction in size of the hemangioma. None of the patients in their study received corticosteroids. Only was bleomycin A5 injected in the local site, no other drugs were used. Other scholars achieved similar results that bleomycin A5 was effective in treating haemangioma.
We used bleomycin A5 as sclerosing agent for infantile haemangiomas for more than 15 years, prednisone treatment accompanied with bleomycin A5 according to the patient's age and the size of haemangioma. In the present study, we reviewed the effects of bleomycin A5 on infantile haemangiomas treated during 1997-2005 in Peking University Hospital of Stomatology.
Materials and methods
Diagnosis of infantile haemangioma
Infantile haemangioma was diagnosed by clinical evaluation of age, and appearance and development of the lesion, combined with ultrasonography or magnetic resonance imaging (MRI) or color Doppler. Attention was paid to differentiate haemagioma from vascular malformation. All of the haemangiomas were located at head, face or neck.
Application of bleomycin A5
The dosage according to lesion size and patient's age
Lesion size(diameter, cm)
The interval of injection was 3 to 4 weeks with total times less than 7 times during one therapeutic period. Another treatment periods started 3 months later if further treatment was necessary. The total quantity of bleomycin A5 for a child should be less than 40 mg in one treatment periods.
Prednisone treatment was used according to the patient's age and the size of the lesion. If the age was less than 7 months, prednisone was given by mouth(2-5 mg/kg/day, QOD, for one month). If the lesion was more than 4 cm, prednisone treatment lasted for 2 periods. Prednisone was usually given at the third month and the sixth month after birth.
Evaluation of the effects of bleomycin A5
The size and blood flow of the hemangioma were evaluated with color ultrasonography every two months. The change of the lesion skin color and scar forming was also evaluated every two months.
Satisfaction of family members was determined according to the final appearance of patient.
Lesion's involution and family's satisfaction
As sumarised in Table 2, all the haemangiomas involuted completely after treated with bloemycin A5. However, the haemangiomas less than 2 cm were easier recovered to normal skin color with less scar forming, comparing with the haemangiomas more than 2 cm.
Size/colour and blood flow changes. The lesion usually begins to decrease after the third time, the height of lesion first decreases with colour fading, then the diameter decreases after 4-5 times injection. Blood flow declines after 4-5 times injection too, but blood flow signal disappears earlier than colour (usually after 5-6 times injection whose diameter is less than 4 cm).
Complications during the usage of Bleomycin A5
Gastrointenstinal side effects included nausea and lack of appetite and often happened one day later, disappeared three days later.
Infantile haemangiomas are usually small lesions and can involute spontaneously. However, some infantile haemangiomas will not involute and even develope to destroy the organ founction with deformity. Clinically there is no good method to predict the process of infantile haemangioma. It is still controversial whether the infantile haemangioma should be treated or not. According to our clinical experience, we suggested that infantile haemangioma should be treated at early stage to prevent the haemangioma from proliferation.
There are several well-established treatments for infantile haemangioma. The major options include corticosteroids (either intralesional or systemic corticosteriods), interferon-α, laser therapy, cryotherapy, and surgical excision [7–10]. We used Bleomycin A5 as sclerosesing agent to modulate angiogenesis of the infantile haemangiomas, and achieved good effects.
Sometime we used bleomycin A5 accompanying by prednisone. We observed that infantile haemangioma usually proliferated rapidly before the postnatal seventh month, especially in the third and sixth month. Although bleomycin A5 can inhibit the haemangioma proliferation effectively, but the dosage was restricted, therefore the drug quantity given in one time may be deficient for big haemangioma(> 4 cm). Another clinical phenomenon which should be paid attention to was that the rapid proliferation in a few of infantile haemangioma can't be controlled at once after bleomycin injection. All above were the reasons that we sometime used prednisone as adjuvant therapy. This is different from other scholars [1–3]. All infantile haemangioma were cured through this way in our hospital.
The pathogenesis of haemangioma is due to the proliferation of vascular endothelial cells. Bleomycin acts on S stage of cell cycle to snip DNA chain during cell mitosis and disturb the cell proliferation. Therefore, the effects of Bleomycin A5 on infantile haemangioma is believed to destroy the proliferation of vascular endothelial cells. The onset of involution is usually heralded by a change in color from bright red to purple or gray after treated with Bleomycin A5 for several times. Small haemangiomas (< 2 cm) would be effectively treated within 5 times of injection with total quantity less than 10 mg of Bleomycin A5. However, big haemangioma (> 4 cm) usually needs more than 8 times of injection with total quantity more than 16 mg of Bleomycin A5. The therapeutic effect was related to the lesion size and the dosage of bleomycin A5 being given.
Some complications occurred during the treatment. Edema was the most common complication, followed by ulceration. However, serious side effects would rarely occur due to the lower dosage in this treatement.
Conclusively, we reviewed the effects of bleomycin A5 on 82 cases of infantile haemangiomas and found that all the haemangiomas involuted completely after treated with bloemycin A5 with better recovery of skin color and less scar forming in small haemangiomas. The results suggested that infantile haemangioma could be effectively treated with bleomycin A5 without serious side effects.
Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
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