A 67-year-old @entity1 was referred to our hospital because of positive sputum cytology. Despite detailed examination, the malignant cell source remained elusive. Twenty months later, CT revealed two nodules in the right S1 and S10 regions which were resected. A year following the operation, gastoendoscopy showed a @entity5 . Total gastrectomy with lymph node dissection was performed. Histologically, this @entity1 was diagnosed with double primary @entity2 with @entity3 to the stomach. The @entity5 of the lung, stomach and @entity5 cells in the sputum showed the same immunoreactivities of @entity6181 ( @entity6181 ). In our institution, of 38 occult @entity2 encountered during the past 10 years, four (10.5%) occurred in the peripheral region. The presented four cases of @entity2 in the peripheral resion revealed bad prognosis, as three out of four @entity1 were dead within 24 months after surgery. All of the four cases showed @entity3 , though the size of the @entity5 was small. Careful follow-up, including monitoring for distant @entity3 , is necessary in radiologically occult peripheral @entity2 .

Peripherally located occult XXXX with @entity6181 expression.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'man'] @entity6181 :: ('267', 'Gene') :: ['autocrine motility factor receptor', 'AMFR'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'primary tumor', 'stomach tumor', 'tumors'] @entity2 :: ('MESH:D008175', 'Disease') :: ['lung cancers', 'radiologically occult lung cancer', 'lung cancer'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis', 'venous invasion']
@entity2 :: (MESH:D008175,Disease) :: ['lung cancer']
