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Biomedical subjects

W D Brown

Publications and source records attributed to W D Brown.

At least 109 records · Page 6Linked to original sources

Influence of biopsy on the prognosis of cutaneous melanoma of the head and neck.

BACKGROUND: This study was performed to determine the effect of biopsy type on survival rates and on local, regional, and distant metastasis in patients with head and neck cutaneous melanoma. METHODS: A case series of 159 patients with melanoma of the head and neck referred to a tertiary-care center between 1983 and 1991, with a median follow-up of 38 months, was reviewed. Information analyzed included patient's age, sex, type of treatment, mode of biopsy, presence of residual melanoma in reexcision, location of lesion, presence of ulceration, Clark's level, Breslow thickness, and histologic type of the melanoma. RESULTS: Excisional biopsy was performed in 79 patients, incisional biopsy in 48, and other procedures (shave, needle biopsy, cauterization, or cryotherapy) in 32. There were no significant pretreatment differences among the three groups in sex, thickness, histologic type, presence of nodal disease, or type of treatment. Pretreatment location of lesion was significantly different (p = .03) between the excisional and other biopsy types. Association between type of biopsy and survival rate was significant (p<.001):31.3% of patients in the incisional biopsy group died of disease, as did 25% of the other biopsy group, versus 8.9% of the excisional biopsy group; 31.3% of patients in the incisional biopsy group developed distant metastases, as did 28.1% of the other biopsy type, versus 10.1% of those in the excisional biopsy group (p = .01). There was no significant difference in local p = .37) or regional (p = 1.00) recurrence among the three biopsy groups. Multivariate analysis showed presence of tumor in the re-excision specimen, biopsy type, and nodal disease to be independent prognostic factors. CONCLUSIONS: Our study suggests that the type of biopsy of cutaneous melanoma of the head and neck may influence the clinical outcome.

Adolescent↗

Sarcoidosis of the spinal cord with extensive vertebral involvement: a case report.

We report on a patient with systemic sarcoidosis who was presented with myelopathy and backache. Plain spinal films were normal, CT scan showed sclerotic lesions within the vertebrae. MRI showed more extensive involvement of the spine with multiple vertebral lesions which were hypointense on both T1W1 and T2W1 and did not enhance with gadolinium. MRI also showed high signal lesions within the cervical and lumbar spinal cord on T2-weighted images (T2W1) which were isointense on T1-weighted images (T1W1) and did not enhance. Vertebral biopsy results were consistent with the diagnosis of sarcoidosis. MRI is very sensitive in detecting sarcoidosis of bone but non-specific and other types of sclerotic or lytic bone lesions (notably metastases) need to be excluded.

Adult↗