B-cell lymphoma of the mandible.
BACKGROUND
Primary malignant lymphoma of the mandible is rare. It is frequently mistaken for a dental lesion, delaying diagnosis. We here report a case of mandibular lymphoma and present the clinical and radiological characteristics and means of treatment of this pathology.


METHODS
A 17-year-old woman consulted for right facial tumefaction with 1 year's evolution. Clinical examination found a mass facing the horizontal branch of the mandible, extending to the right parotid region without cutaneous involvement. CT and MRI showed a large expansive process of mandibular origin with parotid, temporal and intracranial extension. Biopsy indicated large B-cell lymphoma. The patient showed good evolution 2 years after chemotherapy.


CONCLUSIONS
Lymphoma is the second most frequent form of head and neck tumor, after epidermoid carcinoma. Only 0.6% of locations are mandibular, almost always consisting of B-cell lymphoma. They are often initially misdiagnosed as a dental pathology. Complete remission after chemotherapy ranges from 60 to 80% at 1 year.
Service ORL et chirurgie cervicofaciale, CHU Habib Bourguiba, 3029 Sfax, Tunisia. mnejjamalek@gmail.com
M
M
Mnejja
B
B
Hammami
N
N
Kolsi
S
S
Kallel
A
A
Chakroun
I
I
Charfeddine
S
S
Hdiji
M
M
Elloumi
A
A
Ghorbel
D000293:Adolescent; D005260:Female; D006801:Humans; D016393:Lymphoma, B-Cell / Q000175:diagnosis; D008339:Mandibular Neoplasms / Q000175:diagnosis