OBJECTIVES: To analyze the distribution of lymph node @entity3 in @entity1 with @entity957 and improve the rationale for elective treatment of the neck. DESIGN AND SETTING: Retrospective cohort study of @entity1 evaluated from 1990 to 1998 in a tertiary @entity5 care center. @entity1 : The 81 consecutive @entity1 who were identified from the hospital database. @entity1 were eligible for the study if they had a previously untreated @entity957 of the oropharynx and histopathologically diagnosed lymph node @entity3 without a second @entity5 treated by an en bloc resection. MAIN OUTCOME MEASURES: We analyzed the anatomic distribution of lymph node @entity3 . RESULTS: The clinical neck @entity5 stages were N0 in 22 cases, N1 in 22, N2a in 8, N2b in 14, N2c in 4, and N3 in 11. The most common sites for the @entity3 detected clinically as well as histopathologically were at levels II and III. Histologically, level I alone was involved in 5 cases and level IV alone was involved in none. Sixteen @entity1 with @entity135 stage underwent a radical neck dissection. There were 2 cases of @entity3 at level I and no level IV involvement. CONCLUSIONS: Pathological lymph nodes in @entity957 are more frequent at level I than at level IV. This finding suggests that elective neck dissection for @entity1 with @entity189 should be a supraomohyoid neck dissection (levels I, II, and III) rather than a lateral neck dissection (levels II, III, and IV).

Distribution of metastatic lymph nodes in XXXX and its implications for the elective treatment of the neck.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'PATIENTS'] @entity135 :: ('MESH:D006258', 'Disease') :: ['N0 neck cancer'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancer', 'primary tumor'] @entity957 :: ('MESH:D002294', 'Disease') :: ['squamous cell carcinoma', 'oropharyngeal squamous cell carcinoma'] @entity189 :: ('MESH:D002277', 'Disease') :: ['oropharyngeal carcinoma'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastases']
@entity189 :: (MESH:D002277,Disease) :: ['oropharyngeal carcinoma']
