Superior Vena Cava Syndrome and Pulmonary Embolism Revealing a Lung Sarcomatoid Carcinoma: An Uncommon Presentation of a Rare Tumor

Q: What is the clinical evidence from this study?

Study design: Case Report. Population: Metastatic Pulmonary Sarcomatoid Carcinoma (PSC) (n=1). Intervention: Emergency palliative radiotherapy, anticoagulation, and corticosteroids.

Q: What does this research mean for the field?

Pulmonary sarcomatoid carcinoma can aggressively present with severe vascular complications, including superior vena cava syndrome and tumor-related thromboembolism. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Amina Chadli; Soufiane Berhili; Ahmed BenSghier; Mohamed Moukhlissi; Loubna Mezouar

doi:10.7759/cureus.117503

October 5, 2026CureusOpen Access

Superior Vena Cava Syndrome and Pulmonary Embolism Revealing a Lung Sarcomatoid Carcinoma: An Uncommon Presentation of a Rare Tumor

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Key result

Metastatic pulmonary sarcomatoid carcinoma with SVC syndrome and tumor embolism causes rapid fatal decline.

n=1

Why the study?

Pulmonary sarcomatoid carcinoma is a rare, aggressive lung cancer subtype with uncommon but severe tumor-related thromboembolic complications and superior vena cava syndrome.

Key Points

To describe an uncommon presentation of pulmonary sarcomatoid carcinoma featuring concurrent superior vena cava syndrome, extensive venous thrombosis, and suspected pulmonary tumor embolism.
Clinical and radiological evaluation of a 62-year-old male presenting with a right upper lobe mass and extensive distant metastases.
Histopathologic confirmation using bronchoscopic biopsy with immunohistochemical profiling for cytokeratins and lineage markers.
Implementation of acute therapeutic anticoagulation and hypofractionated palliative radiotherapy delivered as 20 Gy in five fractions.
Computed tomography demonstrated direct tumor invasion into the superior vena cava and brachiocephalic veins, left internal jugular and subclavian vein thromboses, and a proximal right pulmonary arterial filling defect suspected to be a tumor embolism.
Metastatic dissemination was confirmed across both lungs, brain, liver, bilateral adrenal glands, peritoneum, and a suspected iliac bone site.
Emergency palliative radiotherapy of 20 Gy in five fractions was targeted to the brain and mediastinum to manage intracranial vasogenic edema and superior vena cava obstruction.

Study Design

Type

Case Report (n=1)

Multicenter

No

Structured PICO

P

Population

A 62-year-old male former heavy smoker presenting with advanced metastatic pulmonary sarcomatoid carcinoma complicated by superior vena cava syndrome and suspected pulmonary tumor embolism.

I

Intervention

Therapeutic anticoagulation, high-dose corticosteroids, and urgent palliative radiotherapy (20 Gy in five daily fractions of 4 Gy) targeting the whole brain and mediastinum.

O

Outcome

Clinical course and survival

This case highlights the highly aggressive nature of pulmonary sarcomatoid carcinoma, demonstrating that it can present with simultaneous severe vascular emergencies like SVC syndrome and tumor-related pulmonary embolism, which carry a rapid, fatal prognosis despite emergency palliation.

Limitations

Lack of histopathological confirmation for the pulmonary arterial filling defect to definitively confirm tumor embolism
Lack of histopathological confirmation of the pulmonary arterial filling defect (suspected tumor-related pulmonary embolism)

Implication

Highlights need for vigilance in rare lung cancer subtypes; leaves open optimal management for aggressive vascular complications.

Abstract

Pulmonary sarcomatoid carcinoma (PSC) is a rare and highly aggressive subtype of non-small cell lung cancer, associated with early metastatic spread and poor prognosis.Tumor-related thromboembolic complications and superior vena cava (SVC) syndrome are uncommon but severe manifestations.We report the case of a 62-year-old man with a history of smoking and alcohol use, presenting with a large right upper lobe tumor with widespread metastases, associated with radiologically suspected tumor-related pulmonary embolism and SVC invasion with multiple venous thromboses.Bronchoscopic biopsy with immunohistochemical analysis confirmed PSC.The patient received anticoagulation and urgent palliative radiotherapy (20 Gy in five fractions) for brain metastases and SVC syndrome.This case highlights the aggressive nature of PSC, its association with rare vascular complications, and the challenges of emergency palliative management in patients with advanced disseminated disease.

Discussion

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Cite This Study

Chadli et al. (2026) conducted a case report in Metastatic Pulmonary Sarcomatoid Carcinoma (PSC) (n=1). Emergency palliative radiotherapy, anticoagulation, and corticosteroids was evaluated. Metastatic pulmonary sarcomatoid carcinoma presented with superior vena cava syndrome and suspected pulmonary tumor embolism, leading to rapid death despite emergency palliative radiotherapy.

synapsesocial.com/papers/6ac72a2936c8cd5d094bf217 https://doi.org/10.7759/cureus.117503

Topics

Pulmonary embolism

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Superior Vena Cava Syndrome and Pulmonary Embolism Revealing a Lung Sarcomatoid Carcinoma: An Uncommon Presentation of a Rare Tumor

Key Points

Study Design

Structured PICO

Limitations

Implication

Abstract

Discussion

Cite This Study

Topics

Superior Vena Cava Syndrome and Pulmonary Embolism Revealing a Lung Sarcomatoid Carcinoma: An Uncommon Presentation of a Rare Tumor

Key Points

Study Design

Structured PICO

Limitations

Implication

Abstract

Discussion

Cite This Study

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