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Intramuscular Cavernous Hemangioma of Medial Rectus Muscle in Paediatric Age Group.

1. Case Report

An 11-year-old male child presented to our hospital with a mass on the nasal aspect of the right eye that has been there for the last 2 years. It was associated with redness over the lesion which was relieved on topical medications. There was no associated pain, lacrimation, or photophobia. It has been associated with binocular diplopia on levoversion for the last 4 months. There was no history of a sudden increase in the size of the mass, pain, forward protrusion of the eyeball, or diminution of vision.

On systemic examination, no abnormality was detected. On ocular examination, the best corrected visual acuity was 6/6 in both eyes. His anterior segment and fundus examination was normal. Extraocular movements were decreased in the right eye on levoversion, levoelevation, and levodepression. Exophthalmometry using Hertel's exophthalmometer with interlateral canthal distance of 100 mm read 15 mm in both eyes.

Local examination revealed a bluish mass with irregular surface and ill-defined margins located in the medial rectus muscle. The mass became more prominent on dextroversion. The mass was 10 x 20 mm in size, firm, nodular, nontender, nonpulsatile, noncompressible, and nonreducible (Figure 1).

USG B-scan revealed a heterogenous mass approximately 23 x 13 mm in extraconal compartment close to the insertion of the medial rectus (MR) muscle with few hyperechoic flecks (Figure 2). MRI of the orbit revealed a well-defined mass of approximately 23 x 13 mm along the medial rectus (MR) muscle. It was isointense on [T.sub.1]W and hyperintense on [T.sub.2]W images with very minimal contrast enhancement (Figure 3). The patient initially consulted a local ophthalmic surgeon elsewhere, where it was initially diagnosed as cysticercosis and treated with albendazole and oral steroids.

A provisional diagnosis of hemangioma or lymphangioma with intralesional haemorrhage was made. As the patient had already received a course of oral steroids without any response and there was no evidence of active flow in the lesion, a decision to carry out excision biopsy was taken.

During surgical excision, the mass was found to be encapsulated by MR fibres. The MR fibres were separated and the mass was removed completely. The MR fibres were sutured together with 6-0 vicryl suture. The mass measuring 20 x 8 x 6.5 mm was removed and sent for histopathology.

The histopathological examination revealed an intramuscular cavernous hemangioma (Figure 4). The patient was started on oral steroids for two weeks to ameliorate the postoperative edema and fibrosis.

2. Discussion

Intramuscular hemangiomas (IMHs) are nonmetastasizing, benign, hamartomatous, congenital neoplasms which remain unremarkable for long but may start growing in the second and third decade of life [1, 2]. Allen and Enzinger classified them into three types based on histopathological features into capillary (50%), cavernous (29%), and mixed (21%). IMHs are rare tumors [3]. Less than 1% of hemangiomas occur in skeletal muscles and more than 20% occur in the head and neck region. The IMHs in extraocular muscles are very rare [1-3]. The aetiology of these lesions is unknown although trauma or hormonal changes are considered important factors in the proliferation of embryonic vascular tissue. Even a congenital theory has been proposed on account of the high incidence of hemangiomas during the first years of life. Only six such cases are recorded in the literature (Table 1).

Christensen et al. reported a case of a 21-year-old female with a 10-year history of proptosis. She was operated on thrice in 9 yrs without reaching a diagnosis. Enucleation of the eye ball with excision of the affected muscle was done which revealed mixed IMH involving four of the six muscles [4].

Kiratli et al. reported two cases of isolated IMH of extraocular muscles: one in a 3-year-old child with involvement of lateral rectus muscle and the other in a 40-yearold man with involvement of the medial rectus muscle. Both of them presented with proptosis and lid swelling. On histopathological examination, the child was diagnosed to have capillary type IMH and the adult man was diagnosed to have mixed type IMH [5].

In our case, the medial rectus was involved. The mass could be excised completely and, on histopathological examination, a purely cavernous type of IMH was noted. In six cases reported till date, 2 cases had mixed type, 2 had capillary type, and 2 had cavernous type (in an adult 63-year-old patient and a 31-year-old pregnant female) on histopathological examination [4-7]. Our case was unique because it is the first case of a purely cavernous hemangioma in a child.

The armamentarium of management options narrows down to just two: medically by systemic steroids and surgically by complete excision. Systemic steroids can reduce the bulk of the tumor but IMHs of extraocular muscles are insensitive to systemic corticosteroids because of encapsulation and presence of cavernous elements which are resistant to corticosteroids [3]. Open surgical excision, including an adequate rim of surrounding healthy tissue, is the treatment of choice for management of such lesions, although recurrences ranging from 9 to 28% have been described even after wide resection of a cuff of normal muscle around the tumor [8]. In our case, no recurrence was noticed even after 3 years of regular follow-up.

https://doi.org/10.1155/2017/1076404

Conflicts of Interest

The authors report no conflicts of interest regarding the publication of this paper.

Authors' Contributions

All the authors were involved in the concept and design of the study, data acquisition, data analysis and interpretation, drafting the manuscript, technical support, and final review of the manuscript.

References

[1] H. C. Lee, S. J. Lee, and Y. D. Kim, "Intramuscular hemangioma of upper lid," Journal of the Korean Ophthalmological Society, vol. 44, pp. 2428-2433, 2003.

[2] J. L. Rossiter, R. A. Hendrix, L. W. C. Tom, and W. P. Potsic, "Intramuscular hemangioma of the head and neck," Otolaryngology-Head and Neck Surgery, vol. 108, no. 1, pp. 18-26, 1993.

[3] P. W. Allen and F. M. Enzinger, "Hemangioma of skeletal muscle. An analysis of 89 cases," Cancer, vol. 29, no. 1, pp. 8-22, 1972.

[4] S. R. Christensen, S. E. Borgesen, S. Heegard, and J. U. Prause, "Orbital intramuscular hemangioma," Acta Ophthalmologica Scandinavica, vol. 80, pp. 336-339, 2002.

[5] H. Kiratli, S. Bilgic, M. Caglar, and F. Soylemezoglu, "Intramuscular hemangiomas of extraocular muscles," Ophthalmology, vol. 110, no. 3, pp. 564-568, 2003.

[6] S.-H. Kim, H.-H. Shin, B.-K. Rho, E.-S. Lee, and S.-H. Baek, "A case of intramuscular hemangioma presenting with large-angle hypertropia," Korean Journal of Ophthalmology: KJO, vol. 20, no. 3, pp. 195-198, 2006.

[7] N. C. Charles, S. Belliappa, and P. Patel, "Intramuscular hemangioma of the inferior oblique: a rare cause of extraocular muscle enlargement," JAMA Ophthalmology, vol. 132, no. 1, pp. 122-124, 2014.

[8] B. J. Lee, L. Schoenfield, and J. D. Perry, "Orbital intramuscular hemangioma enlarging during pregnancy," Ophthalmic Plastic and Reconstructive Surgery, vol. 25, no. 6, pp. 491-493, 2009.

Anuj Mehta, Shalini Butola, Mayuresh Naik, Sangeeta Abrol, and Anju Kumari

Department of Ophthalmology, VMMC & Safdarjung Hospital, Ring Road, Ansari Nagar, New Delhi 110029, India

Correspondence should be addressed to Mayuresh Naik; mayureshpnaik@gmail.com

Received 23 October 2016; Revised 7 February 2017; Accepted 9 February 2017; Published 13 March 2017

Academic Editor: Frederic Mouriaux

Caption: Figure 1: Preoperative status showing prominence of the hemangioma on dextroversion.

Caption: Figure 2: USG B-scan of orbit showing heterogenous mass in the extraconal compartment close to the insertion of the medial rectus.

Caption: Figure 3: MRI scan of orbit MRI of the orbit revealed a well-defined mass of approximately 23 x 13 mm along the medial rectus muscle.

Caption: Figure 4: Histopathological section showing cavernous hemangioma.
Table 1: Review of cases of "intramuscular hemangiomas" in
extraocular muscles.

Year   Author        Age      Extraocular       Histopathologic
                              muscle involved   type of IMH

2002   Christensen   21 yrs   MR, LR, IR, SO    Mixed
2003   Kiratli       3 yrs    LR                Capillary
2003   Kiratli       40 yrs   MR                Mixed
2006   Kim           63 yrs   SR                Cavernous
2009   Lee           31 yrs   MR                Cavernous
2014   Charles       25 yrs   IO                Capillary

MR: medial rectus; LR: lateral rectus; IR: inferior rectus;
SR: superior rectus; IO: inferior oblique; SO: superior oblique.
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Title Annotation:Case Report
Author:Mehta, Anuj; Butola, Shalini; Naik, Mayuresh; Abrol, Sangeeta; Kumari, Anju
Publication:Case Reports in Ophthalmological Medicine
Article Type:Case study
Date:Jan 1, 2017
Words:1348
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