Eggshell calcification (lymph nodes)
Last revised by Yuranga Weerakkody on 3 Sep 2023
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Weerakkody Y, Elfeky M, et al. Eggshell calcification (lymph nodes). Reference article, Radiopaedia.org (Accessed on 06 Oct 2024) https://doi.org/10.53347/rID-1262
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rID:
1262
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Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
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Last revised:
3 Sep 2023,
Yuranga Weerakkody ◉
Disclosures:
At the time the article was last revised Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.
View Yuranga Weerakkody's current disclosures
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15 contributors -
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Systems:
Sections:
Synonyms:
- Eggshell calcifications
- Eggshell calcifications - general
- Egg shell like calcification
Eggshell calcification refers to fine calcification seen at the periphery of a mass and usually relates to lamellar lymph node calcification. For similar appearance in the breast, see eggshell calcification (breast).
On this page:
Terminology
In 1967 Jacobsen and Felson published criteria to help "avoid over-reading of the incidental circumferential concentrations of calcium and to eliminate confusion with the ring shadows of bronchi on end." These criteria were 6:
shell-like calcifications up to 2 mm thick must be present in the peripheral zone of at least two lymph nodes
the calcifications may be solid or broken
in at least one of the lymph nodes, the ring-like shadow must be complete
the central part of the lymph node may show additional calcifications
one of the affected lymph nodes must be at least 1 cm in its greatest diameter
Pathology
Etiology
In the mediastinum and thorax 3,4:
silicosis: 5% patients
treated lymphoma: (postirradiation Hodgkin disease) usually 1-9 years following treatment
coal workers' pneumoconiosis (CWP): 1% patients
sarcoidosis: calcification is uncommon (only 5% of patients) and occurs late in the disease; only rarely does it have an eggshell configuration
amyloidosis: rare
blastomycosis (e.g. pulmonary blastomycosis): rare
histoplasmosis (e.g. pulmonary histoplasmosis): rare
Differential diagnosis
For eggshell-like calcification appearances in the thorax consider:
See also
References
- 1. Ralph Weissleder. Primer of Diagnostic Imaging. (2007) ISBN: 9780323040686 - Google Books
- 2. F W Wright. Radiology of the Chest and Related Conditions. (2001) ISBN: 9780415281416 - Google Books
- 3. Gross B, Schneider H, Proto A. Eggshell Calcification of Lymph Nodes: An Update. AJR Am J Roentgenol. 1980;135(6):1265-8. doi:10.2214/ajr.135.6.1265 - Pubmed
- 4. Jacobson G, Felson B et al "Eggshell calcifications in coal and metal miners." Semin Roentgenol 1967; 2: 276-282
- 5. Patell R, Dosi R, Joshi H, Shah P. Eggshell Calcification. BMJ Case Rep. 2013;2013(aug13 1):bcr2013200362. doi:10.1136/bcr-2013-200362 - Pubmed
- 6. Chiarenza A, Esposto Ultimo L, Falsaperla D et al. Chest Imaging Using Signs, Symbols, and Naturalistic Images: A Practical Guide for Radiologists and Non-Radiologists. Insights Imaging. 2019;10(1):114. doi:10.1186/s13244-019-0789-4 - Pubmed
Incoming Links
Articles:
- Calcified mediastinal lymph nodes (differential)
- Mediastinal lymphoma
- Calcified pulmonary nodules
- Animal and animal produce inspired signs
- Sarcoidosis (thoracic manifestations)
- Eggshell calcification (breast)
- Eggshell calcification in thorax and mediastinum (mnemonic)
- Coal workers' pneumoconiosis
- Silicosis
- Scleroderma (pulmonary manifestations)
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