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

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)