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Biomedical subjects

R B Raney

Publications and source records attributed to R B Raney.

120 records · Page 7Linked to original sources
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Management of neoplasms of the head and neck in children. 1. Benign tumors.

The otolaryngologist who treats children must have knowledge of the neoplasms that can occur in childhood. Such tumors are usually mesenchymal in origin and may be benign or malignant. Diagnosis and management of the more common benign tumors are undertaken by the otolaryngologist because local excision is generally curative. The proper treatment of malignant lesions requires a more extensive, multidisciplinary team, which includes a pediatric oncologist, diagnostic and therapeutic radiologist, and pathologist, in addition to the otolaryngologist. The purposes of this paper are to outline the types of benign and malignant neoplasms that occur in childhood and to discuss current approaches to therapy.

Age Factors↗
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Management of neoplasms of the head and neck in children. II. Malignant tumors.

The otolaryngologist who treats children must have knowledge of the neoplasms that can occur in childhood. Such tumors are usually mesenchymal in origin and may be benign or malignant. Diagnosis and management of the more common benign tumors are undertaken by the otolaryngologist because local excision is generally curative. The proper treatment of malignant lesions requires a more extensive, multidisciplinary team, which includes a pediatric oncologist, diagnostic and therapeutic radiologist, and pathologist, in addition to the otolaryngologist. This article outlines the types of malignant neoplasms that occur in childhood and discusses current approaches to therapy.

Child↗
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Imaging and clinical spectrum of rhabdomyosarcoma in children.

We retrospectively analyzed the MRI findings of rhabdomyosarcoma (RMSA) in 23 patients to evaluate its role in staging and management. Heterogeneous signal abnormalities were noted in the sarcoma lesions with significant contrast enhancement. Seven head and neck cases showed direct bone invasion and destruction; only one had distant bony metastasis. Metastasis was noted in the lymph nodes, lung, bone, abdominoperitoneum, and head and neck soft tissue. MRI findings of RMSA are most helpful in staging and assessing therapeutic response.

Child↗
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Anomalies of the scapula.

This is a report of a case of double acromion and double coracoid and a commentary on the comparative anatomy and embryology of the shoulder. Congenital elevation of the scapula, ossification of the transverse scapular ligament, clasp-like superior border of the scapula, coracoclavicular joint, coracoclavicular bridge, coracosternale bone, os acromiale, elongated acromion, convex glenoid, hypoplasia of the inferior border of the glenoid, dentated glenoid, infrascapular bone, and notched inferior angle of the scapula are other anomalies of the scapula reported in the literature.

Acromion↗
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Soft-tissue sarcomas of the diaphragm: a report from the Intergroup Rhabdomyosarcoma Study Group from 1972 to 1997.

PURPOSE: To describe clinical details and outcome of children and adolescents with primary sarcomas of the diaphragm treated on Intergroup Rhabdomyosarcoma Studies (IRS) I through IV. PATIENTS AND METHODS: We reviewed the records of 15 patients with sarcoma of the diaphragm who were entered on IRS Group protocols between 1972 and 1997. Patient ages at diagnosis ranged from 0.5 to 20 years (median, 13 yrs), and 10 were girls. Patients had chest pain, dyspnea, and/or coughing, decreased breath sounds, and occasionally hepatomegaly. RESULTS: Localized, gross residual disease after initial surgery was present in 10 patients, and five had metastases at diagnosis (pleura, 3; pericardium, 1; lungs and bones, 1). Tumor subtypes were alveolar rhabdomyosarcoma (RMS) in five cases, embryonal RMS in three, undifferentiated sarcoma in three, extraosseous Ewing sarcoma in three, and unclassified sarcoma in one. Treatment consisted of radiation therapy to the primary tumor and metastases when feasible, and combination chemotherapy with vincristine, actinomycin D, and cyclophosphamide with or without doxorubicin, ifosfamide, cisplatin, and etoposide. Ten patients achieved complete remission (67%), four obtained a partial remission, and one was improved. Five patients (33%) are continuously failure-free and alive at a median of 8.8 years from diagnosis (range, 1.1-15 yrs). However, the other 10 patients experienced relapse at 0.3 to 2 years from start of therapy (median, 1 yr). Sites of relapse were local in five, distant in three, and combined in two. Death after relapse occurred at 0.39 to 2.6 years (median, 1.6 yrs) from diagnosis. CONCLUSIONS: Sarcomas of the diaphragm are generally deemed unresectable at diagnosis and/or are metastatic. Most of them are not embryonal rhabdomyosarcomas. Treatment with more effective primary chemotherapy to shrink the tumor, followed-up by surgical resection and radiation therapy, should improve the prognosis for patients with sarcomas arising in the diaphragm, especially for the majority who have localized tumors.

Adolescent↗
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Malignant rhabdoid tumor presenting as a hemangioma.

Malignant rhabdoid tumor is a rare and highly aggressive malignancy of unknown etiology. We report a primary cutaneous rhabdoid tumor on the upper back of a newborn. It was initially diagnosed as a hemangioma clinically, and that diagnosis was supported by radiologic studies, including magnetic resonance imaging. However, detailed investigation with light microscopy, immunohistochemistry, and electron microscopy enabled us to make a diagnosis of rhabdoid tumor. This is the seventh reported case of rhabdoid tumor with primary cutaneous involvement.

Antineoplastic Combined Chemotherapy Protocols↗
PubMedDate not supplied

Juvenile spindle cell carcinoma.

Spindle cell carcinoma is an uncommon variant of squamous cell carcinoma that is rarely seen in children. The spindle cell pattern is frequently confused with sarcomas. A case of spindle carcinoma in a 14-year-old boy is presented. He is the youngest patient, to the authors' knowledge, with spindle cell carcinoma of the maxilla. Electron microscopic examination is helpful to define the epithelial nature of the spindle cells and can be performed on formalin-fixed tissue. Electron microscopic examination is essential to formulate an optimal treatment plan.

Adolescent↗