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Marando A, Zagni M, Negrelli M, Valtorta E, Lauricella C, Motta V, Veronese S, Cerea G, Giannetta LG, Ciarlo G, Signorelli D, Pizzutilo EG, Bonoldi E, Pelosi G. Biphenotypic lung carcinoma with coexpression of TTF-1 and ΔNP63/P40 within most of the same individual cells: a further case confirming poor prognosis and a review of literature. Pathologica 2024; 116:13-21. [PMID: 38482671 PMCID: PMC10938280 DOI: 10.32074/1591-951x-957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 03/17/2024] Open
Abstract
The WHO Classification of Tumors, Thoracic Tumors, 5th edition, has outlined the use of TTF-1 and ΔNP63/P40 to discriminate between adenocarcinoma and squamous cell carcinoma. In 2015, the first description of a rare non-small cell lung carcinoma featuring co-expression of glandular and squamous differentiation within most of the same individual tumor cells was reported on, with ultrastructural and molecular demonstration of such a biphenotypic differentiation. We herein describe an additional case of this rare tumor entity, which is confirmed to be an aggressive neoplasm despite potential targets of therapy.
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Affiliation(s)
| | - Moreno Zagni
- Postgraduate School of Pathology, University of Milan, Milan, Italy
| | | | - Emanuele Valtorta
- Department of Pathology, ASST Grande Ospedale Niguarda, Milan, Italy
| | | | - Valentina Motta
- Department of Pathology, ASST Grande Ospedale Niguarda, Milan, Italy
| | - Silvio Veronese
- Department of Pathology, ASST Grande Ospedale Niguarda, Milan, Italy
| | - Giulio Cerea
- Niguarda Cancer Center, ASST Grande Ospedale Niguarda, Milan, Italy
| | | | - Gabriele Ciarlo
- Niguarda Cancer Center, ASST Grande Ospedale Niguarda, Milan, Italy
| | - Diego Signorelli
- Niguarda Cancer Center, ASST Grande Ospedale Niguarda, Milan, Italy
| | - Elio Gregory Pizzutilo
- Niguarda Cancer Center, ASST Grande Ospedale Niguarda, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Emanuela Bonoldi
- Department of Pathology, ASST Grande Ospedale Niguarda, Milan, Italy
| | - Giuseppe Pelosi
- Postgraduate School of Pathology, University of Milan, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy; Inter-Hospital Pathology Division, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) MultiMedica, Milan, Italy
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