There has been interval removal of the previously seen left frontal approach ventricular drainage catheter and placement of new bilateral frontal approach ventricular drainage catheters. The catheter on the right has its tip near the foramen of Monro to the left of midline. The catheter on the left has its tip within the body of the left lateral ventricle near the foramen of Monro. There is postprocedural gas along the new catheter tracts, and there is high density material and small foci of gas along the prior catheter tract, compatible with hemorrhage. There is also a small amount of expected nondependent gas and mildly increased conspicuity of layering blood products within the right lateral ventricle. There is persistent dilation of the lateral and third ventricles which appears slightly decreased compared to the prior study, with the third ventricle now measuring 2.1 cm in transverse dimension , previously 2.3 cm. The CSF space surrounding the posterior fossa mass is mildly decreased compared prior study. There is redemonstration of postoperative changes of occipital craniotomy with partial resection of a heterogeneous posterior fossa mass, with small residual extra-axial fluid and minimal local pneumocephalus. There is persistent hyperdensity along the lateral aspect of the mass. The right mastoid air cells are again partially opacified. The sulci are again partially effaced, similar to prior.
location descriptor_fin: ['left', 'bilateral']object_fin: ['drainage catheter']procedure_fin: ['drainage']clinical findings_fin: {'interval removal of the previously seen left frontal approach ventricular drainage catheter and placement': {'clinical finding': 'interval removal of the previously seen left frontal approach ventricular drainage catheter and placement'}}anatomical entity_fin: {'foramen': {}}location descriptor_fin: ['right', 'left', 'midline']object_fin: ['catheter']clinical findings_fin: {'monro': {'clinical finding': 'monro', 'existence': 'pos_dx', 'observation': 'monro'}}anatomical entity_fin: {'body': {}, 'left lateral ventricle': {}, 'foramen': {}}location descriptor_fin: ['left']object_fin: ['catheter']imaging observation_fin: ['foci']object_fin: ['catheter']clinical findings_fin: {'postprocedural gas': {'clinical finding': 'postprocedural gas', 'existence': 'pos_dx', 'descriptive_term': 'postprocedural', 'observation': 'gas'}, 'gas': {'clinical finding': 'gas', 'existence': 'pos_dx', 'observation': 'gas'}, 'hemorrhage': {'clinical finding': 'hemorrhage', 'cf_snomed': {'hemorrhage': 50960005}, 'existence': 'pos_dx', 'observation': 'hemorrhage'}}anatomical entity_fin: {'right lateral ventricle': {}}imaging observation_fin: ['blood products']clinical findings_fin: {'expected nondependent gas': {'clinical finding': 'expected nondependent gas', 'existence': 'pos_dx', 'descriptive_term': 'expected nondependent', 'observation': 'gas'}, 'layering blood products': {'clinical finding': 'layering blood products', 'existence': 'pos_dx', 'descriptive_term': 'layering blood', 'observation': 'product'}}size_fin: [{'size': '2.1 cm'}, {'size': '2.3 cm'}]anatomical entity_fin: {'third ventricles': {}, 'third ventricle': {}}location descriptor_fin: ['lateral']clinical findings_fin: {'persistent dilation': {'clinical finding': 'persistent dilation', 'existence': 'pos_dx', 'descriptive_term': 'persistent', 'observation': 'dilation', 'temporal_term': 'persistent'}}location descriptor_fin: ['posterior']clinical findings_fin: {'posterior fossa mass': {'clinical finding': 'posterior fossa mass', 'existence': 'pos_dx', 'descriptive_term': 'posterior fossa', 'observation': 'mass'}, 'decreased': {'clinical finding': 'decreased', 'existence': 'pos_dx', 'observation': 'decrease'}}anatomical entity_fin: {'fluid': {}}location descriptor_fin: ['posterior']clinical findings_fin: {'postoperative changes': {'clinical finding': 'postoperative changes', 'existence': 'pos_dx', 'descriptive_term': 'postoperative', 'observation': 'change'}, 'heterogeneous posterior fossa mass': {'clinical finding': 'heterogeneous posterior fossa mass', 'existence': 'pos_dx', 'descriptive_term': 'heterogeneous posterior fossa', 'observation': 'mass'}, 'small residual': {'clinical finding': 'small residual', 'existence': 'pos_dx', 'descriptive_term': 'small', 'observation': 'residual', 'strength_term': 'small'}, 'minimal local pneumocephalus': {'clinical finding': 'minimal local pneumocephalus', 'cf_snomed': {'pneumocephalus': 14415006}, 'existence': 'pos_dx', 'descriptive_term': 'minimal local', 'observation': 'pneumocephalus', 'strength_term': 'minimal', 'quantity_term': 'minimal'}}location descriptor_fin: ['lateral']clinical findings_fin: {'persistent hyperdensity': {'clinical finding': 'persistent hyperdensity', 'existence': 'pos_dx', 'descriptive_term': 'persistent', 'observation': 'hyperdensity', 'temporal_term': 'persistent'}, 'mass': {'clinical finding': 'mass', 'existence': 'pos_dx', 'observation': 'mass'}}anatomical entity_fin: {'mastoid air cells': {'location descriptor': 'right'}}location descriptor_fin: ['right']clinical findings_fin: {'right mastoid air cells are again partially opacified': {'clinical finding': 'right mastoid air cells are again partially opacified', 'change_term': 'opacified'}}clinical findings_fin: {'effaced': {'clinical finding': 'effaced', 'existence': 'pos_dx', 'observation': 'effaced'}}
<s>[INST] Write the finding section for a radiology report based on the following information: location descriptor_fin: ['left', 'bilateral']object_fin: ['drainage catheter']procedure_fin: ['drainage']clinical findings_fin: {'interval removal of the previously seen left frontal approach ventricular drainage catheter and placement': {'clinical finding': 'interval removal of the previously seen left frontal approach ventricular drainage catheter and placement'}}anatomical entity_fin: {'foramen': {}}location descriptor_fin: ['right', 'left', 'midline']object_fin: ['catheter']clinical findings_fin: {'monro': {'clinical finding': 'monro', 'existence': 'pos_dx', 'observation': 'monro'}}anatomical entity_fin: {'body': {}, 'left lateral ventricle': {}, 'foramen': {}}location descriptor_fin: ['left']object_fin: ['catheter']imaging observation_fin: ['foci']object_fin: ['catheter']clinical findings_fin: {'postprocedural gas': {'clinical finding': 'postprocedural gas', 'existence': 'pos_dx', 'descriptive_term': 'postprocedural', 'observation': 'gas'}, 'gas': {'clinical finding': 'gas', 'existence': 'pos_dx', 'observation': 'gas'}, 'hemorrhage': {'clinical finding': 'hemorrhage', 'cf_snomed': {'hemorrhage': 50960005}, 'existence': 'pos_dx', 'observation': 'hemorrhage'}}anatomical entity_fin: {'right lateral ventricle': {}}imaging observation_fin: ['blood products']clinical findings_fin: {'expected nondependent gas': {'clinical finding': 'expected nondependent gas', 'existence': 'pos_dx', 'descriptive_term': 'expected nondependent', 'observation': 'gas'}, 'layering blood products': {'clinical finding': 'layering blood products', 'existence': 'pos_dx', 'descriptive_term': 'layering blood', 'observation': 'product'}}size_fin: [{'size': '2.1 cm'}, {'size': '2.3 cm'}]anatomical entity_fin: {'third ventricles': {}, 'third ventricle': {}}location descriptor_fin: ['lateral']clinical findings_fin: {'persistent dilation': {'clinical finding': 'persistent dilation', 'existence': 'pos_dx', 'descriptive_term': 'persistent', 'observation': 'dilation', 'temporal_term': 'persistent'}}location descriptor_fin: ['posterior']clinical findings_fin: {'posterior fossa mass': {'clinical finding': 'posterior fossa mass', 'existence': 'pos_dx', 'descriptive_term': 'posterior fossa', 'observation': 'mass'}, 'decreased': {'clinical finding': 'decreased', 'existence': 'pos_dx', 'observation': 'decrease'}}anatomical entity_fin: {'fluid': {}}location descriptor_fin: ['posterior']clinical findings_fin: {'postoperative changes': {'clinical finding': 'postoperative changes', 'existence': 'pos_dx', 'descriptive_term': 'postoperative', 'observation': 'change'}, 'heterogeneous posterior fossa mass': {'clinical finding': 'heterogeneous posterior fossa mass', 'existence': 'pos_dx', 'descriptive_term': 'heterogeneous posterior fossa', 'observation': 'mass'}, 'small residual': {'clinical finding': 'small residual', 'existence': 'pos_dx', 'descriptive_term': 'small', 'observation': 'residual', 'strength_term': 'small'}, 'minimal local pneumocephalus': {'clinical finding': 'minimal local pneumocephalus', 'cf_snomed': {'pneumocephalus': 14415006}, 'existence': 'pos_dx', 'descriptive_term': 'minimal local', 'observation': 'pneumocephalus', 'strength_term': 'minimal', 'quantity_term': 'minimal'}}location descriptor_fin: ['lateral']clinical findings_fin: {'persistent hyperdensity': {'clinical finding': 'persistent hyperdensity', 'existence': 'pos_dx', 'descriptive_term': 'persistent', 'observation': 'hyperdensity', 'temporal_term': 'persistent'}, 'mass': {'clinical finding': 'mass', 'existence': 'pos_dx', 'observation': 'mass'}}anatomical entity_fin: {'mastoid air cells': {'location descriptor': 'right'}}location descriptor_fin: ['right']clinical findings_fin: {'right mastoid air cells are again partially opacified': {'clinical finding': 'right mastoid air cells are again partially opacified', 'change_term': 'opacified'}}clinical findings_fin: {'effaced': {'clinical finding': 'effaced', 'existence': 'pos_dx', 'observation': 'effaced'}} [/INST] There has been interval removal of the previously seen left frontal approach ventricular drainage catheter and placement of new bilateral frontal approach ventricular drainage catheters. The catheter on the right has its tip near the foramen of Monro to the left of midline. The catheter on the left has its tip within the body of the left lateral ventricle near the foramen of Monro. There is postprocedural gas along the new catheter tracts, and there is high density material and small foci of gas along the prior catheter tract, compatible with hemorrhage. There is also a small amount of expected nondependent gas and mildly increased conspicuity of layering blood products within the right lateral ventricle. There is persistent dilation of the lateral and third ventricles which appears slightly decreased compared to the prior study, with the third ventricle now measuring 2.1 cm in transverse dimension , previously 2.3 cm. The CSF space surrounding the posterior fossa mass is mildly decreased compared prior study. There is redemonstration of postoperative changes of occipital craniotomy with partial resection of a heterogeneous posterior fossa mass, with small residual extra-axial fluid and minimal local pneumocephalus. There is persistent hyperdensity along the lateral aspect of the mass. The right mastoid air cells are again partially opacified. The sulci are again partially effaced, similar to prior. </s>