Article Text

Download PDFPDF
Images in Thorax
Diagnostic challenge of intrathoracic tissue misplacements: a thymic choristoma in a fetal lung
  1. Gianluca Lopez1,2,
  2. Roberto Croci1,2,
  3. Tommaso Rizzuti2,
  4. Stefano Ferrero1,2,
  5. Nicola Fusco1,2
  1. 1 Universita degli Studi di Milano, Milano, Italy
  2. 2 Division of Pathology, Fondazione IRCCS Ca’ Granda – Ospedale Maggiore Policlinico, Milan, Italy
  1. Correspondence to Dr Nicola Fusco, Universita degli Studi di Milano, Milano 20100, Italy; nicola.fusco{at}

Statistics from


Choristomas (Gr. chōristos, ‘separated’) are well-delimited formations consisting of histologically normal tissue located in an abnormal anatomical site.1 Their aetiology is related to failures in the normal course of embryonic development of the neural tube. While choristomas are frequently encountered in some parts of the body (eg, thyroid gland, pelvis), an intrapulmonary localisation is rarer. In particular, the presence of thymic tissue in the lung has never been documented in the English literature. Here, we illustrate a choristoma composed of mature thymic tissue in the lung of a fetus who died after 16 weeks of gestation.

Case presentation

A 21-year-old, gravida 1, para 0 woman experienced a spontaneous abortion at 16 weeks of gestation. Autoptic examination of …

View Full Text

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.