[ @entity19477 with unknown primary site in a Japanese XXXX ].

@entity1 @entity32 @entity227 @entity2194 @entity15535 @entity19477 @entity1596 @entity941 @entity230 @entity320 @entity4816 @entity479
BACKGROUND: We report the clinical features of the first case of a Japanese @entity1 with @entity19477 . CASE: A 44-year-old @entity1 complained of photopsia and @entity227 in her right eye, and was treated with @entity230 for @entity1596 by an ophthalmologist. She was referred to our hospital for further examination. After one month of treatment, she still complained of photopsia in her right eye. The best corrected visual acuity in the right eye was 0.8 and these was sensitivity loss in the central visual field test. Ophthalmoscopy and @entity941 angiography showed some @entity4816 in the right eye. A full-field electroretinogram demonstrated a negative-type electroretinogram (ERG) waveform with attenuation of the b-wave amplitude in the right eye. A dark adaptation test revealed sensitivity loss of the rods. The lymph nodes on the right side of her neck were examined and the diagnosis was made of metastic @entity320 with unknown primary site; her @entity227 was diagnosed as @entity19477 . The retinal @entity32 improved after @entity479 treatment, but her @entity227 remained. Chemotherapy and an immunotherapy regimen was begun, but 36 months later she died of @entity320 in the lungs. CONCLUSIONS: A @entity1 treated for @entity1596 without any prior @entity2194 was diagnosed with @entity19477 and @entity320 in the cervical lymph nodes of unknown primary origin. The first ocular symptoms were photopsia and @entity227 , not @entity15535 . ERG was useful for diagnosing this rare ocular condition in an early stage.
