[Transitional cell carcinoma in a young heavy marihuana smoker].
OBJECTIVE
To report a case of low grade papillary transitional cell carcinoma of the left renal pelvis in a young, heavy smoker of marihuana who denied cocaine use, alcohol intake and other habits.


RESULTS
Intravenous pyelogram demonstrated a filling defect in the left renal pelvis and calyces. Biopsy revealed a urothelial carcinoma. The pathological analysis demonstrated diffuse low-grade non-invasive (Ta) papillary transitional cell carcinoma of the renal pelvis and calyces. Nephroureterectomy was performed.


CONCLUSIONS
This case indicates a cause-effect relationship between heavy and long-term marihuna smoking and transitional cell cancer. However, further cases from the literature or observations in larger populations are warranted.
Moiche Bokobo
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P
Departamento de Urología, Hospital Príncipe de Asturias, Alcalá de Henares, Madrid, España.
Atxa de la Presa
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MA
Cuesta Angulo
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J
D000328:Adult; D002295:Carcinoma, Transitional Cell / Q000209:etiology*; D006801:Humans; D007680:Kidney Neoplasms / Q000209:etiology*; D007682:Kidney Pelvis; D008297:Male; D002189:Marijuana Abuse / Q000150:complications*; D012720:Severity of Illness Index