Pachyonychia congenital (PC) is a rare autosomal dominant genodermatosis characterized hyperkeratosis affecting the nails and palmoplantar areas, oral leukokeratosis, and cystic lesions. A 39-year-old woman with PC type 1 (Jadassohn-Lewandowsky syndrome) and B-cell lymphoma is described. No similar disorders or parental consanguinity were found in her family. Typical features of PC developed si...

A case of primary malignant non-Hodgkin's lymphoma of the breast is reported. This is the first well-documented case of breast lymphoma in our institution and also in Iran. The diagnosis of primary breast lymphoma requires the presence of lymphomatous infiltration in close ass, tissue in patients with neither previous lymphoma nor concurrent lymphoma in another site. There is no definite cl...

Extranodal natural killer/T-cell lymphoma (ENKTL), nasal type, is a distinct entity of non-Hodgkin lymphoma with interesting unique biologic and clinicopathologic features. The tumor is characterized by ethnic preponderance, a consistent association with Epstein-Barr virus (EBV) infection, peculiar histopathologic findings, and a predilection to affect primarily the upper aerodigestive tract, i...

protein losing enteropathy (ple) as an initial finding of lymphoma, is extremely rare in childhood. we describe clinical and pathological features of an unusual case of gastrointestinal lymphoma presented with ple as a sole manifestation. differential diagnosis in children presenting with ple is critical because early diagnosis and treatment are important for survival in patients with lymphoma.

non hodgkin lymphoma (nhl) constitutes 5% of all head & neck cancer. the incidence of it has been increased over the last four decades. one of main characteristic of nhl is extranodal presentation that has different pattern in various part of world. a retrospective was designed in a tertiary referral center. it has been done between january 1996 and march 2006. all clinical and pathological cha...