Lithuanian Lung Cancer Implementation Guide, published by Lithuanian Medical Library. This guide is not an authorized publication; it is the continuous build for version 0.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7LT/ig-lt-lung/ and changes regularly. See the Directory of published versions

Profiles

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Profiles

This page describes the FHIR profiles defined in the Lithuanian Lung Cancer Implementation Guide. The profiles model the LDCT (low-dose chest computed tomography) screening pathway — from the imaging report container through individual findings to the LUNG-RADS assessment and follow-up recommendations.

Report and Composition Profiles

Profile	Description
LungReportLtLung	Overall LDCT diagnostic report wrapping the lung composition and aggregating all structured results. Based on ImagingReportLt from the base IG.
LungCompositionLtLung	Lung-specific imaging composition with sections for findings (nodules, incidental findings), impression (LUNG-RADS), and recommendations. Based on ImagingCompositionLt.

Assessment and Finding Profiles

Profile	Description
LungRadsAssessmentLtLung	LUNG-RADS category assessment (0, 1, 2, 3, 4A, 4B, 4X) with optional S modifier for significant incidental findings.
PulmonaryNoduleObservationLtLung	Individual pulmonary nodule observation with type (solid, part-solid, ground-glass, calcified, cavitary), lung lobe location, morphology (spiculation, irregular margins, pleural association), and size/volume measurements.
IncidentalFindingLtLung	Significant incidental finding detected during LDCT — covers pulmonary findings (emphysema, bronchiectasis, pleural changes) and extra-pulmonary findings (coronary calcification, aortic aneurysm, mediastinal mass, etc.).
LungRecommendationObservationLtLung	Follow-up recommendation based on the LUNG-RADS category (repeat screening, follow-up interval, specialist consultation).

Cross-IG Dependencies

The lung cancer screening pathway relies on resources from other Lithuanian FHIR IGs:

• Vital Signs IG — anthropometric measurements (height, weight, BMI) collected in the pre-examination questionnaire
• Lifestyle IG — smoking status, tobacco consumption, pack-years, tobacco type, and smoking cessation data critical for lung cancer risk assessment
• Base IG — foundation profiles (PatientLt, PractitionerLt, ObservationLt, DiagnosticReportLt, ImagingReportLt, ImagingCompositionLt, ServiceRequestLt, EncounterLt)