title: Primary non Hodgkin's lymphoma of the lacrimal sac.
abstract: BACKGROUND
  Primary Non Hodgkin's Lymphoma (NHL) of the lacrimal sac is rare.
  
  
  METHODS
  The clinical features of a 78 year old female who presented with epiphora and swelling of the left lacrimal sac are described.
  
  
  RESULTS
  Computerised tomography showed a mass involving the left lacrimal sac. Histopathological examination revealed a diffuse large B cell NHL. Immunohistological examination demonstrated B cell origin. Chemotherapy could not be administered due to co morbid conditions. The patient was treated with radiotherapy to a dose of 45 Gy in 25 fractions. Patient is disease free and on follow up after 36 months.
  
  
  CONCLUSIONS
  Primary radiotherapy is a treatment option with curative potential for localized NHL of the lacrimal sac and may be considered in patients who cannot tolerate appropriate chemotherapy.
authors.affiliation: Division of Medical Oncology, Royal Darwin Hospital, Casuarina, Australia. doctormathewkgeorge@yahoo.co.in.
authors.forename: Ramachandran
authors.initials: R
authors.lastname: Venkitaraman
authors.forename: Mathew K
authors.initials: MK
authors.lastname: George