Mucosa-associated lymphoid tissue lymphoma of the parotid gland – a case report

Abstract

Mucosa-associated lymphoid tissue (MALT) lymphoma of the parotid gland is a rare entity among head and neck tumours. We report a case of a patient with a medical history of diffuse large B-cell Non-Hodgkin Lymphoma with complete remission following chemotherapy, who presented seven years afterwards with a progressive painless hard swelling of the right parotidgland. Ultrasonography followed by contrast-enhanced MRI features was consistent with a malignant tumour. Consequently, fine and core needle aspiration biopsy were performed under ultrasound guidance and the final histopathological result was MALT lymphoma of the parotid gland. The most important particularity of the case is the sequential development of two different histopathological types of Non-Hodgkin Lymphoma, both of B-cell lineage.

Linfoma MALT de glándula parótida. Revisión sistemática

“…Para ello, además de los estudios de imagen, se obtiene rutinariamente un FNAB o PAAF (biopsia por aspiración con aguja fina), para análisis citológico. El uso de la PAAF en linfomas de cabeza y cuello es seguro [42,43], pero presenta una tasa del 32% de falsos negativos. Además, su habilidad para diferenciar el tipo histológico de linfoma es baja.…”