title: Mucosa-associated lymphoid tissue lymphoma presenting as ground glass nodule.
abstract: Pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma rarely occurs. It is difficult to distinguish MALT lymphomas and pre-invasive lesions according to radiological findings. We report a case of 60-year-old woman who was found to have a rapidly growing ground glass nodule (GGN) on her left lower lobe, discovered on follow-up chest computed tomography. The radiological image was pure GGN, which was compatible with a pre-invasive lesion, such as non-mucinous adenocarcinoma in situ. Wedge resection was performed and the final diagnosis was stage I MALT lymphoma. After surgery, she was doing well with no evidence of recurrence one year later. We believe a lung biopsy for rapidly growing GGN is recommended in order to confirm the pathological diagnosis.
authors.affiliation: Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine Tokyo, Japan.
authors.forename: Tomonari
authors.initials: T
authors.lastname: Kinoshita
authors.affiliation: Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine Tokyo, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohtsuka
authors.affiliation: Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine Tokyo, Japan.
authors.forename: Taichiro
authors.initials: T
authors.lastname: Goto
authors.affiliation: Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine Tokyo, Japan.
authors.forename: Ikuo
authors.initials: I
authors.lastname: Kamiyama
authors.affiliation: Department of Pathology, Keio University School of Medicine Tokyo, Japan.
authors.forename: Katsura
authors.initials: K
authors.lastname: Emoto
authors.affiliation: Department of Pathology, Keio University School of Medicine Tokyo, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Hayashi
authors.affiliation: Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine Tokyo, Japan.
authors.forename: Mitsutomo
authors.initials: M
authors.lastname: Kohno
keywords: Lung wedge resection; pulmonary mucosa-associated lymphoid tissue lymphoma; pure ground glass nodule