Mar 14, 2008

Feasibility of the sentinel node biopsy in anal cancer

The Quarterly Journal of Nuclear Medicine and Molecular Imaging : Official Publication of the Italian Association of Nuclear Medicine (AIMN) [and] the International Association of Radiopharmacology (IAR), [and] Section of the Society of Radiopharmaceutica
M MistrangeloA Mussa


Anal cancer is a rare neoplasm. According to a European Organization for Research and Treatment of Cancer multivariate analysis, synchronous inguinal lymph node metastasis occurs in 10-25% of patients and constitutes an independent prognostic factor for local failure and overall mortality. Inguinal lymph node status was assessed using the sentinel node technique in 35 patients with anal cancer. Histology revealed 23 squamous carcinomas, 10 basaloid carcinomas, 1 squamous carcinoma with basaloid areas and 1 spinocellular epithelioma associated with areas of Bowen's disease. Disease stage was T1 in 5 patients, T2 in 18, T3 in 11 and T4 in 1 patient. Lympho-scintigraphy using a GE Millennium gamma camera was performed after peritumoral injection of 37 MBq of 99mTc colloid. Surgical sentinel node biopsy with a portable Scintiprobe MR 100 (Politech, Carsoli, Italy) had a detection rate of 97.1%. Inguinal metastases were detected in 7 (20%) patients, in 2 of which metastasis was bilateral. Given the correlation between prognosis and node involvement, sentinel node biopsy can be considered a simple method for adequate pretreatment staging of anal carcinoma. Use of the technique could avert the need for prophylactic inguinal radiothera...Continue Reading

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Mentioned in this Paper

Carcinoma of Anal Margin
Morbidity Aspects
Histology Procedure
TNM Staging System
Sentinel Node (Disorder)
Lymphatic Metastasis
Bowen's Disease
Structure of Inguinal Ring

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