Endobronchial carcinoid tumor: Radiological findings of a clinical case

We describe the case of a female patient, 21 years old, complaining of dyspnea attacks and wheezing 2 years ago. Chest radiography showed volume loss in the left lower lobe and ipsilateral retrocardiac triangular basal opacity. CT scan showed an extensive solid mass with apex protruding into the left main and lower lobar bronchi, causing distal atelectasis. Histopathological and immunohistochemical study of transbronchial biopsy of the lesion revealed a typical carcinoid tumor, confirmed after tumor resection with total left pneumectomy.

Keywords:
Carcinoid Tumor; Endobronchial; Pulmonary; Typical; Diagnostic Imaging

Authorship

Rodolfo Mendes Queiroz ^**Correspondence: Address: Rua Bernardino de Campos, 980, Centro, Ribeirão Preto, SP – Brazil, Postal code: 14015-130. rod_queiroz@hotmail.com

Department of Radiology and Medical Imaging, Documenta – Hospital São Francisco, Ribeirão Preto, SP, BrazilDocumenta – Hospital São FranciscoBrazilRibeirão Preto, SP, BrazilDepartment of Radiology and Medical Imaging, Documenta – Hospital São Francisco, Ribeirão Preto, SP, Brazil

https://orcid.org/0000-0002-4893-4422

Danilo Brotto Ferreira de Santana

Rogério Nastri Filho

Gláucia Aparecida Magnani Landell

Department of Anatomical Pathology, Cytopathology and Histology; Anatomical Pathology and Cytopathology Unit, Prof. Dr. Humberto de Queiroz Menezes, Ribeirão Preto, SP, BrazilAnatomical Pathology and Cytopathology UnitBrazilRibeirão Preto, SP, BrazilDepartment of Anatomical Pathology, Cytopathology and Histology; Anatomical Pathology and Cytopathology Unit, Prof. Dr. Humberto de Queiroz Menezes, Ribeirão Preto, SP, Brazil

Paulo Roberto Félix

Marcus Vinícius Nascimento Valentin

*Correspondence: Address: Rua Bernardino de Campos, 980, Centro, Ribeirão Preto, SP – Brazil, Postal code: 14015-130. rod_queiroz@hotmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (3)

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FIGURE 1
Chest radiographs in posteroanterior (A) and lateral (B) view revealing opacity at the left lung base (yellow arrowheads) within the retrocardiac space, appearing predominantly triangular with apex converging to the pulmonary hilum and base blurring of the edges of the diaphragm dome. Note the difference between the edges of the opacity in relation to the cardiac silhouette (*).

Thumbnail

FIGURE 2
Computed tomography scan of the thorax, mediastinal window, without contrast medium (A, C) and after administration of intravenous iodate contrast agent (B, D), revealing a left infrahilar lung mass causing subsegmentar atelectasis of the ipsilateral inferior lobe, with exophytic nodular component protruding into the lumen of the left main and lower subsegmental bronchi. We found scarce punctiform calcifications and diffuse linear foci (A, yellow arrow), as well as accentuated enhancement with contrast medium (B, D) in the extensive mass.

Thumbnail

FIGURE 3
A and B. HE staining, showing differentiated small cell epithelial proliferation with rounded, non-pleomorphic nuclei and granular chromatin, with a “salt and pepper” appearance of the tissue. C. Immunohistochemistry with chromogranin A showing cytoplasmic expression of gold-brown DAB in neoplastic cells.

FIGURE 1 Chest radiographs in posteroanterior (A) and lateral (B) view revealing opacity at the left lung base (yellow arrowheads) within the retrocardiac space, appearing predominantly triangular with apex converging to the pulmonary hilum and base blurring of the edges of the diaphragm dome. Note the difference between the edges of the opacity in relation to the cardiac silhouette (*).

FIGURE 2 Computed tomography scan of the thorax, mediastinal window, without contrast medium (A, C) and after administration of intravenous iodate contrast agent (B, D), revealing a left infrahilar lung mass causing subsegmentar atelectasis of the ipsilateral inferior lobe, with exophytic nodular component protruding into the lumen of the left main and lower subsegmental bronchi. We found scarce punctiform calcifications and diffuse linear foci (A, yellow arrow), as well as accentuated enhancement with contrast medium (B, D) in the extensive mass.

FIGURE 3 A and B. HE staining, showing differentiated small cell epithelial proliferation with rounded, non-pleomorphic nuclei and granular chromatin, with a “salt and pepper” appearance of the tissue. C. Immunohistochemistry with chromogranin A showing cytoplasmic expression of gold-brown DAB in neoplastic cells.

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E-mail: ramb@amb.org.br

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Endobronchial carcinoid tumor: Radiological findings of a clinical case

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[1] *Correspondence: Address: Rua Bernardino de Campos, 980, Centro, Ribeirão Preto, SP – Brazil, Postal code: 14015-130. rod_queiroz@hotmail.com