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Pulmonary hamartoma:a clinic-pathologic study of 206 consecutive cases focusing on different histologic variants

中华胸部外科电子杂志 2022年第3期9卷 133-139页

作者： Laura Melocchi Alberto Cavazza Maria Sirolli Elisa Albertini sofia melotti Tommaso Bizzarro Arianna Oberti Fabio Davoli Giulio Rossi Pathology Unit Department of OncologyFondazione Poliambulanza Hospital InstituteBresciaItaly Pathology Unit Azienda USL/IRCCS di Reggio EmiliaReggio EmiliaItaly Pathology Unit Santa Maria delle Croci Teaching HospitalAzienda USL of RomagnaRavennaItaly Resident of the School of Specialization in Anatomic Pathology“A.M.Mancini” University of BolognaBolognaItaly Operative Unit of Pathologic Anatomy Azienda USL of RomagnaInfermi HospitalRiminiItaly Specialty School of Pathologic Anatomy University of BresciaBresciaItaly General and Thoracic Surgery Unit IRCCS Istituto Ortopedico RizzoliBolognaItaly Department of Thoracic Surgery Azienda USL of RomagnaSanta Maria delle Croci Teaching HospitalRavennaItaly

Background:Pulmonary hamartoma(PH)is the most common benign pulmonary tumor usually presenting as a solitary,well-demarcated nodule composed of mature cartilage and adipose *** unusual histologic variants are challenging on clinic-radiologic and pathologic ***:We collected a multicentric,retrospective,consecutive series of 206 PH with clinical characteristics and histologic ***:Clinical data were in line with the literature demonstrating a male prevalence(2:1)and a median age of 61.6 *** median size of the nodule was 17.8 *** performed,SUVmax>2.5 at FDC-PET was evidenced in 4%of cases(5 out of 119)and was significantly associated with undifferentiated/myxoid *** histology showing chondroid or chondro-lipomatous PH was quoted in 186 cases(90%),while leiomyomatous and undifferentiated/myxoid variants were recorded in 20 cases(10%).The high rate of unusual variants on pathology is possibly related to a selection bias due to external consultations or surgical excision of the lesions lacking classic features at imaging ***:About 10% of PH may show unusual histology and SUVmax>2.5 at FDC-PET in 4%.These uncommon findings may challenge the correct recognition,raising some concerns in terms of differential diagnosis with several other mesenchymal tumors in the *** features should be kept in mind to achieve a correct diagnosis and avoid unnecessary invasive treatments.

关键词： Hamartoma lung WHO histology immunohistochemistry incidence imaging

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