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 Visit: Rhabdomyosarcoma ; Primary Pulmonary Rhabdomyosarcoma

Temporal bone rhabdomyosarcomas are rare tumours that occur almost exclusively in children. They arise most commonly in the middle ear, from which they extend through the mastoid and petrous portions of the temporal bone, eventually invading the cranium.

Age: Usually between 1 to 12 years of age.

Clinical presentation: The child often complains of bloody discharge. The tumour often presents as a "polyp" in the external auditory meatus and may invade into the middle ear, hence it can be difficult to identify the exact site of origin of the tumour.

Gross:  Lobulated red mass with areas of hemorrhage.

Microscopic features: The rhabdomyosarcomas in this area are mostly embryonal in type.

If untreated the tumour can spread extensively into the cranial cavity, externally, or to the pharyngeal region.

                  

Rhabdomyosarcoma of the middle ear and mastoid: a case report and review of the literature.Ear Nose Throat J. 2005 Dec;84(12):780, 782, 784.

We report a case of rhabdomyosarcoma of the middle ear and mastoid in a 3-year-old boy. The patient was treated according to Intergroup Rhabdomyosarcoma Study IV protocol (chemo- and radiotherapy), and he experienced a complete remission. However 7 months after the completion of treatment, he experienced a recurrence at the primary site that spread to the brain. Despite treatment, the patient died of progressive metastasis to the lung 4 months later.

Paediatric rhabdomyosarcoma of the ear and temporal bone.Clin Otolaryngol Allied Sci. 2004 Feb;29(1):32-7.

The objective of the present study was to review the presentation, management, outcome and morbidity of paediatric patients presenting to a single centre with rhabdomyosarcoma of the ear and temporal region. All patients diagnosed with rhabdomyosarcoma of the ear and temporal region between 1980 and 2000 were entered into this retrospective study. Fourteen patients were identified. The median age at presentation was 4.5 years with a mean time of onset of symptoms to diagnosis of 21 weeks. In many patients, the presentation mimicked that of chronic otitis media, delaying diagnosis. Histological subtype was embryonal in 13 patients and alveolar in 1. All patients underwent multimodality treatment. The 5-year disease-free survival rate was 81%. Regional post-treatment morbidity included chronic aural discharge (6/14), facial palsy (8/14), growth disturbance (4/14) and maxillo-facial deformity occurring in four children. From the results, we conclude that these patients should usually present to an ENT surgeon who should keep the diagnosis in mind when dealing with children with chronic otitis media as early diagnosis with referral to a specialist multidisciplinary team will optimize the chance of survival. Discharge, hearing loss and aural polyp, although commonly because of chronic otitis media, should prompt urgent investigation and biopsy, particularly if associated with facial palsy, lymphadenopathy or an obvious mass.

Rhabdomyosarcoma of the ear and temporal bone.
Laryngoscope. 1989 Nov;99(11):1188-92
.

Rhabdomyosarcoma, the most common soft tissue sarcoma of childhood, involves the temporal bone in approximately 7% of reported cases. Until recently, the outcome of this disease was always fatal. The recent Intergroup Rhabdomyosarcoma Study Group (IRS-I) reported on the efficacy of multimodality therapy consisting of multiagent chemotherapy, radiation, and surgical resection when indicated. Twelve patients with rhabdomyosarcoma involving the temporal bone were treated between 1966 and 1988. Three patients were treated according to the IRS-I protocols and the remaining nine patients received various combinations of treatment modalities. Ten patients succumbed to their disease, most with distant metastases or intracranial extension. Two patients are alive; one at 5 1/2 years and one at 19 years. It is apparent that, although survival for rhabdomyosarcoma in general has improved with the use of IRS-I protocols, prognosis remains poor for disease involving the temporal bone and other parameningeal sites.

Rhabdomyosarcoma of the middle ear and mastoid in children.J Laryngol Otol. 1988 Jul;102(7):614-9.

Three cases of embryonal rhabdomyosarcoma in the middle ear and mastoid in children are presented. Diagnosis was confirmed by histopathology. A multidisciplinary approach employing surgery, chemotherapy and radiation therapy is the method of choice in the management of this rare and highly lethal condition.

Embryonal rhabdomyosarcoma of the ear: a review of the literature and case history.J Laryngol Otol. 1984 Dec;98(12):1261-6.

Approximately 50 per cent of all rhabdomyosarcomas in children occur in the head and neck region with the orbit, nasopharynx and ear in order of descending frequency. Embryonal rhabdomyosarcoma is the commonest malignant tumour of the aural region in childhood and its clinical course is usually rapidly fatal, with extensive local disease and or distant metastases (Dehner and Chen, 1978). Other malignant tumours that can occur in children include melanoma and other mesenchymal tumours, including undifferentiated sarcoma, fibrosarcoma, osteogenic sarcomas and Ewing sarcoma. Secondary extension may occur from a meningioma. Osseous disorders of the temporal bone, such as eosinophilic granuloma and Hand-Schüller-Christian disease, should be included as a differential diagnosis (Lewis, 1979).

Rhabdomyosarcoma of the middle ear: a wolf in sheep's clothing. Pediatrics. 1980 Jun;65(6):1131-3.

A 3-year-old boy with inflammatory granulation tissue in the ear canal and typanometric evidence of middle-ear effusion was examined. Subsequently, rhabdomyosarcoma of the middle ear was diagnosed. The insidious, deceptive presentation of this common pediatric tumor in an uncommon location is discussed with indication that early diagnosis and aggressive multimodal antitumor therapy seems to be improving the hitherto gloomy prognosis for these highly lethal middle-ear-neoplasms.

Temporal bone findings in rhabdomyosarcoma with predominantly petrous involvement.Arch Otolaryngol. 1980 May;106(5):290-3.

Temporal bone rhabdomyosarcomas are rare tumors that occur almost exclusively in children. They arise most commonly in the middle ear, from which they extend through the mastoid and petrous portions of the temporal bone, eventually invading the cranium. We report the histopathologic findings of a rhabdomyosarcoma with anterior and medial displacement, predominantly involving the petrous bone. Recognition and separate study of this type of tumor is clinically important. Predominantly petrosal rhabdomyosarcomas are less prevalent than similar lesions with lateral expansion and tend to develop significant ear symptoms late in the course of the disease. When first diagnosed, these lesions usually exhibit signs of intracranial extension, and consequently are less amenable to treatment and are more rapidly fatal.

Rhabdomyosarcoma of the temporal bone. Is surgical resection necessary?Arch Otolaryngol. 1979 Jun;105(6):310-3.

Three patients had embryonal rhabdomyosarcoma of the temporal bone. Their clinical appearances demonstrated the following characteristics: (1) symptoms of an acute process in the middle ear cleft and mastoid, (2) a rapidly growing polypoid mass that was visible in the middle ear and external auditory canal, and (3) seventh nerve involvement and destruction of bone. Definitive treatment with the use of systemic chemotherapy and radiation therapy to the invaded structures was followed by maintenance chemotherapy for up to 24 months. Surgical treatment was sufficient to obtain adequate biopsy material. All patients recovered variable degrees of motor nerve functions. One patient experienced a meningococcal meningitis years after treatment; this condition resulted in total deafness. The results suggest that multiple-drug chemotherapy and radiation therapy for all involved areas are the mainstay of treatment for this disease entity.

 


October 2007

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Case Index

Infectious Disease Online; INDEX: A-D ; INDEX: E-L ; INDEX: M-P INDEX: Q-Z ; FUNGAL DISEASE ; VIRAL DISEASE.

Angiolymphoid Hyperplasia with Eosinophilia of the External Ear ;

Neoplasms of the External Ear ;

Squamous Cell Carcinoma of the External Ear ;

Verrucous Carcinoma of the External Ear

Basal cell carcinoma of the External Ear ;

Ceruminous Adenoma of the External Ear ;

Pleomorphic Adenoma of the External Ear ;

Syringocystadenoma Papilliferum of the External Ear ;

Cylindroma of the External Ear ;

Ceruminous Adenocarcinoma of the External Ear ;

Adenoid Cystic Carcinoma of the External Ear ;

Melanocytic Tumours of the External Ear ;

Diagnosis of Paediatric tumours

Neuroblastoma

Ewing's sarcoma / PNET

Desmoplastic Small Round Cell Tumour

Hepatoblastoma

Retinoblastoma

Lipoblastoma

Cellular Hemangioma of Infancy

Kaposiform hemangioendothelioma

Fibrous Hamartoma of Infancy

Infantile Myofibromatosis

Congenital and Infantile Fibrosarcoma

Giant Cell Fibroblastoma

Fetal Rhabdomyoma

Cervical Thymic Cyst

Yolk Sac Tumour

Hirschsprung's Disease

Neonatal Necrotizing Enterocolitis

Gaucher's Disease

Salivary gland anlage tumour of the nasopharynx

Heterotopic Glial Nodule

Paediatric Thyroid Disorders