CTICasesCalcified Mid-Lung Nodule Mimicking Hamartoma with Nodal Metastasis
Imaging findings
A separate mid-lung nodule in another patient is well-defined and contains dense internal calcification, an appearance initially suggesting a low-grade process such as hamartoma given its sharp margins and calcium content.
Key takeaways
Calcification occurs in only a small minority of carcinoid tumors (well under 10% of cases) and can mimic the calcified appearance of a hamartoma; this lesion proved to be a typical carcinoid that had already spread to hilar and mediastinal lymph nodes despite its otherwise low-grade histology, underscoring that nodal spread can occur even with typical (low-grade) carcinoid.
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