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Browsing by Author "Homma, Akihiro"

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  • Molecularly defined sinonasal malignancies: an overview with focus on the current WHO classification and recently described provisional entities
    Publication . Skálová, Alena; Agaimy, Abbas; Bradova, Martina; Poorten, Vincent Vander; Hanna, Ehab; Guntinas-Lichius, Orlando; Franchi, Alessandro; Hellquist, Henrik; Simpson, Roderick H. W.; Lopéz, Fernando; Nuyts, Sandra; Chiesa-Estomba, Carlos; Ng, Sweet Ping; Homma, Akihiro; Teng, Yong; Leivo, Ilmo; Ferlito, Alfio
    Classification of tumors of the head and neck has evolved in recent decades including a widespread application of molecular testing in tumors of the sinonasal tract, salivary glands, and soft tissues with a predilection for the head and neck. The availability of new molecular techniques has allowed for the definition of multiple novel tumor types unique to head and neck sites. Moreover, an expanding spectrum of immunohistochemical markers specific to genetic alterations facilitates rapid identification of diagnostic molecular abnormalities. As such, it is currently possible for head and neck pathologists to benefit from a molecularly defined tumor classification while making diagnoses that are still based largely on histopathology and immunohistochemistry. This review covers the principal molecular alterations in sinonasal malignancies, such as alterations in DEK, AFF2, NUTM1, IDH1-2, and SWI/SNF genes in particular, that are important from a practical standpoint for diagnosis, prognosis, and prediction of response to treatment.
    2024Journal article Open access Show more
  • Update on olfactory neuroblastoma
    Publication . Lopez, Fernando; Agaimy, Abbas; Franchi, Alessandro; Suárez, Carlos; Vander Poorten, Vincent; Mäkitie, Antti A.; Homma, Akihiro; Eisbruch, Avraham; Olsen, Kerry D.; Saba, Nabil F.; Nuyts, Sandra; Snyderman, Carl; Beitler, Jonathan J.; Corry, June; Hanna, Ehab; Hellquist, Henrik; Rinaldo, Alessandra; Ferlito, Alfio
    Olfactory neuroblastomas are uncommon malignancies that arise from olfactory receptor cells located high in the nasal cavity. Accurate diagnosis plays a crucial role in determining clinical results and guiding treatment decisions. Diagnosis can be a major challenge for pathologists, especially when dealing with tumours with poor differentiation. The discovery of several molecular and immunohistochemical markers would help to overcome classification difficulties. Due to the paucity of large-scale studies, standardisation of diagnosis, treatment and prediction of outcome remains a challenge. Surgical resection by endoscopic techniques with the addition of postoperative irradiation is the treatment of choice. In addition, it is advisable to consider elective neck irradiation to minimise the risk of nodal recurrence. Molecular characterisation will help not only to make more accurate diagnoses but also to identify specific molecular targets that can be used to develop personalised treatment options tailored to each patient. The present review aims to summarise the current state of knowledge on histopathological diagnosis, the molecular biology and management of this disease.
    2024Journal article Restricted access Show more