Publications by authors named "Giacomo Sollini"

12 Publications

  • Page 1 of 1

Infra-Temporal and Pterygo-Palatine Fossae Tumors: A Frontier in Endoscopic Endonasal Surgery-Description of the Surgical Anatomy of the Approach and Report of Illustrative Cases.

Int J Environ Res Public Health 2022 05 25;19(11). Epub 2022 May 25.

Programma Neurochirurgia Ipofisi-Pituitary Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, 40139 Bologna, Italy.

Infratemporal and pterygopalatine fossae (ITF and PPF) represent two complex paramedian skull base areas, which can be defined as jewelry boxes, containing a large number of neurovascular and osteomuscular structures of primary importance. They are in close communication with many craniofacial areas, such as nasal/paranasal sinuses, orbit, middle cranial fossa, and oral cavities. Therefore, they can be involved by tumoral, infective or inflammatory lesions spreading from these spaces. Moreover, they can be the primary site of the development of some primitive tumors. For the deep-seated location of ITF and PPF lesions and their close relationship with the surrounding functional neuro-vascular structures, their surgery represents a challenge. In the last decades, the introduction of the endoscope in skull base surgery has favored the development of an innovative anterior endonasal approach for ITF and PPF tumors: the transmaxillary-pterygoid, which gives a direct and straightforward route for these areas. It has demonstrated that it is effective and safe for the treatment of a large number of benign and malignant neoplasms, located in these fossae, avoiding extensive bone drilling, soft tissue demolition, possibly unaesthetic scars, and reducing the risk of neurological deficits. However, some limits, especially for vascular tumors or lesions with lateral extension, are still present. Based on the experience of our multidisciplinary team, we present our operative technique, surgical indications, and pre- and post-operative management protocol for patients with ITF and PPF tumors.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
May 2022

NGS-based miRNome identifies miR-449 cluster as marker of malignant transformation of sinonasal inverted papilloma.

Oral Oncol 2021 11 13;122:105554. Epub 2021 Oct 13.

Department of Clinical and Molecular Sciences, Section of Occupational Medicine, Polytechnic University of Marche, Ancona, Italy.

Objective: identification of the miRNA expression profile in sinonasal inverted papilloma (SNIP) as a tool to evaluate the risk of transformation into sinonasal squamous cell carcinoma (SNSCC).

Materials And Methods: paired tumour tissues and adjacent normal tissues were obtained from SNIP and SNSCC patients who had undergone surgical resection and used for next-generation sequencing (NGS)-based miRNome analysis. SNIP tissues with concomitant dysplasia (SNIP-DISP) were used as malignant transition samples. By comparing the deregulated miRNAs in SNIP and SNSCC, an miRNA cluster was identified and its physio- and clinical-pathological value was predicted.

Results: NGS identified 54 miRNAs significantly down- and upregulated in SNIP. Among them, the miR-449 cluster was upregulated in SNIP and could differentiate the benign tumour from normal tissue. Notably, the miR-449 cluster was found to be significantly underexpressed in SNSCC, and the cluster markedly changed in SNIP during the malignant transition into SNSCC. miRNA enrichment analysis and GO analysis revealed that miR-449 is involved in apoptotic and cell proliferation pathways.

Conclusions: Our findings suggest that miR-449 may be involved in the molecular pathogenesis of SNIP and its malignant transformation into SNSCC. miR-449 might therefore be a useful tumour biomarker in patients with SNIP and may also have the potential to be used as a tool for detecting and monitoring the course of the possible malignant transformation.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
November 2021

MiRNome analysis identifying miR-205 and miR-449a as biomarkers of disease progression in intestinal-type sinonasal adenocarcinoma.

Head Neck 2022 01 14;44(1):18-33. Epub 2021 Oct 14.

ENT Division "Bellaria Hospital", AUSL, Bologna, Italy.

Background: Patients with intestinal-type sinonasal adenocarcinoma (ITAC) have an unfavorable prognosis, and new diagnostic and therapeutic approaches are needed to improve clinical management.

Methods: Next-generation sequencing-based miRNome analysis was performed on 43 ITAC patients who underwent surgical resection, and microRNA (miRNA) data were obtained from 35 cases. Four miRNAs were identified, and their expression levels were detected by reverse-transcription quantitative polymerase chain reaction and related to the relevant patient outcome. Overall survival and disease-free survival rates were evaluated through the Kaplan-Meier method and log-rank test, and multivariate analysis was performed by means of Cox proportional hazard analysis.

Results: High levels of miR-205 and miR-34c/miR-449 cluster expression were associated with an increased recurrence risk and, therefore, a worse prognosis. Multivariate analysis confirmed that miR-205 and miR-449 were significant prognostic predictors.

Conclusions: A high expression of miR-205 and miR-449 is independent predictors of poor survival for ITAC patients.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
January 2022

Association of Clinicopathological Features With Outcome in Chondrosarcomas of the Head and Neck.

Otolaryngol Head Neck Surg 2021 04 15;164(4):807-814. Epub 2020 Sep 15.

Service of Anatomic Pathology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Objective: The aim of this study is to assess the association between clinical and radiological features as well as of isocitrate dehydrogenase 1 and 2 ( 1,2) mutations with outcome in head and neck chondrosarcomas.

Study Design: Retrospective study.

Setting: Tertiary referral center.

Methods: Clinical, histological, and molecular data of patients with head and neck chondrosarcomas treated by surgery were collected.

Results: Forty-six patients were included. The mean age at diagnosis was 56 years (range, 17-78). The tumor originated from the skull base (52.2%), facial bones (28.2%), or laryngotracheal area (19.6%). At last follow-up (median 52.5 months), 38 patients were alive, 30 of which were disease free, whereas 8 had died, 4 of disease progression and 4 of other causes. Fourteen (30.4%) had local recurrence and 2 (4.3%) had lung metastasis. All cases were negative for cytokeratin AE1/AE3, brachyury, and IDH1 at immunohistochemistry, while Sanger sequencing identified IDH1/2 point mutations, typically IDH1 R132C, in 9 (37.5%) tumors arising from the skull base. Margin infiltration on the surgical specimen negatively affected the outcome, whereas no correlation was identified with mutation status.

Conclusions: An adequate margin positively affects survival. mutation status does not affect patient outcome.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
April 2021

Machine learning-based prediction of outcomes of the endoscopic endonasal approach in Cushing disease: is the future coming?

Neurosurg Focus 2020 06;48(6):E5

1Pituitary Unit, Center for the Diagnosis and Treatment of Hypothalamic-Pituitary Diseases, IRCCS Institute of Neurological Sciences of Bologna.

Objective: Machine learning (ML) is an innovative method to analyze large and complex data sets. The aim of this study was to evaluate the use of ML to identify predictors of early postsurgical and long-term outcomes in patients treated for Cushing disease (CD).

Methods: All consecutive patients in our center who underwent surgery for CD through the endoscopic endonasal approach were retrospectively reviewed. Study endpoints were gross-tumor removal (GTR), postsurgical remission, and long-term control of disease. Several demographic, radiological, and histological factors were assessed as potential predictors. For ML-based modeling, data were randomly divided into 2 sets with an 80% to 20% ratio for bootstrapped training and testing, respectively. Several algorithms were tested and tuned for the area under the curve (AUC).

Results: The study included 151 patients. GTR was achieved in 137 patients (91%), and postsurgical hypersecretion remission was achieved in 133 patients (88%). At last follow-up, 116 patients (77%) were still in remission after surgery and in 21 patients (14%), CD was controlled with complementary treatment (overall, of 131 cases, 87% were under control at follow-up). At internal validation, the endpoints were predicted with AUCs of 0.81-1.00, accuracy of 81%-100%, and Brier scores of 0.035-0.151. Tumor size and invasiveness and histological confirmation of adrenocorticotropic hormone (ACTH)-secreting cells were the main predictors for the 3 endpoints of interest.

Conclusions: ML algorithms were used to train and internally validate robust models for all the endpoints, giving accurate outcome predictions in CD cases. This analytical method seems promising for potentially improving future patient care and counseling; however, careful clinical interpretation of the results remains necessary before any clinical adoption of ML. Moreover, further studies and increased sample sizes are definitely required before the widespread adoption of ML to the study of CD.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
June 2020

Endoscopic approaches to orbital lesions: case series and systematic literature review.

J Neurosurg 2020 Jan 3:1-13. Epub 2020 Jan 3.

1Center for the Diagnosis and Treatment of Hypothalamic-Pituitary Diseases, Pituitary Unit, and.

Objective: Surgical treatment of orbital lesions is challenging because complex approaches with a high risk of postoperative sequelae are required. Recently, minimally invasive endoscopic approaches through endonasal (EEA) and transpalpebral (ETP) routes have been proposed. The objective of this study was to assess outcomes of EEA and ETP in the authors' series of patients with orbital lesions.

Methods: Data from all patients who underwent operations for an orbital tumor through an endoscopic approach at the authors' institution from 2002 to 2018 were retrospectively collected. All patients underwent preoperative MRI and ophthalmological evaluation, which was repeated 3 months after surgery and then at regular follow-up intervals. A systematic review of the literature was also performed using Medline, Embase, and Web of Science databases.

Results: The series includes 23 patients (14 males); the mean patient age was 48 ± 23.9 years. Most of the lesions were intraconal (n = 19, 83%). The more frequent histotype was cavernous hemangioma (n = 5, 22%). Exophthalmos was the most common symptom (21 of 23 patients). EEA was performed in 16 cases (70%) and ETP in 7 (30%). The aim of the surgery was achieved in 94% of the cases after an EEA (successful biopsy in 5 of 6 cases and radical resection in all 10 remaining patients), and in 86% after an ETP (successful biopsy in 2 cases and radical tumor resection in 4 of 5 cases). Complications consisted of 3 cases (13%) of transitory diplopia. One recurrence (4%) was observed at follow-up (mean 59 ± 55 months).

Conclusions: The EEA and ETP have demonstrated to be safe and effective for tumors located respectively in medial and lateral quadrants, permitting one to approach orbital lesions endoscopically at 360°. Innovative surgical tools, including intraoperative ultrasonography, may be useful to potentially reduce surgical morbidity. Larger series are needed to validate these preliminary suggestions.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
January 2020

Peculiar pathological, radiological and clinical features of skull-base de-differentiated chordomas. Results from a referral centre case-series and literature review.

Histopathology 2020 Apr 10;76(5):731-739. Epub 2020 Mar 10.

Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.

Aims: De-differentiated chordoma is an uncommon and incompletely characterised aggressive neoplasm. Only a few cases originating from the skull base have been reported.

Methods And Results: All consecutive cases of skull-base de-differentiated chordomas treated surgically in a referral centre from January 1990 to June 2019 were retrospectively evaluated to assess peculiar pathological, radiological and clinical features. Patient data were retrieved from paper and electronic records. Six cases (two male, four female; mean age at surgery = 46 years, range = 35-64), treated surgically at our institution were identified. Transformation to de-differentiated chordomas occurred after radiation therapy in three cases (mean = 13.6 years after treatment, range = 5-25), two during tumour progression, while one was de-novo. Magnetic resonance imaging and surgical examination revealed the presence of two different tumour components, corresponding to the conventional and de-differentiated portion on histological examination. The de-novo case presented a PIK3CA mutation. DNA methylation analysis revealed consistent epigenetic changes in TERT, MAGEA11 and UXT. Prognosis was poor, as five of six patients died after surgery and radiation therapy, with a mean overall survival of 29 months (range = 11-52).

Conclusions: Skull-base de-differentiated chordomas are extremely rare and aggressive neoplasms with characteristic magnetic resonance imaging, surgical and histological features. Therefore, an early and accurate histological diagnosis is of paramount relevance. Molecular analysis appears promising to define mechanisms involved in tumour de-differentiation.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
April 2020

Sino-Nasal Anatomical Variations in Rhinogenic Headache Pathogenesis.

J Craniofac Surg 2019 Jul;30(5):1503-1505

Department of Otorhinolaryngology-Head and Neck Surgery, University of Genoa, Genova, Italy.

Rhinogenic headache (RH) is a widespread pain syndrome but its pathogenesis and treatment are still unclear. Some authors recognize a correlation between RH and mucosal contact points or some other sinonasal anatomical variations. The authors conducted a retrospective case-control study to analyze the correlation between radiological findings and clinical symptoms.One hundred-nineteen adults with Para-Nasal Sinuses Computed Tomography (PNS-CT) scans were included: 64 patients who have originally undergone PNS-CT scan as part of rhinogenic headache workup (Group A), and 55 controls in whom PNS-CT scans were obtained for other purposes (Group B). All subjects were asked to report their symptoms using a headache scoring system. PNS-CT scans of all subjects were analyzed for presence of mucosal contact points, middle turbinate concha bullosa (MTCB) and frontoethmoidal cells.The most common anatomical abnormality found in our series was MTCB, reported in 60.9% of patients in Group A and 41.8% of those in Group B. A statistically significant prevalence was found in Group A compared to Group B regarding the presence of MTCB (P = 0.037) and Type II (P = 0.016) and Type III (P = 0.039) frontoethmoidal cells. No statistically significant difference (P >0.05) was found between Group A and Group B regarding the presence of mucosal contact points at each site.Multiple anatomical variations in nasal and paranasal sinuses may cause a rhinogenic headache with different characteristics. Some of these, such as concha bullosa of middle turbinate or type II and III Kuhn cells, have shown a significant association with rhinogenic headache. No statistically significant association was found between presence of headache and mucosal contact points and type I and IV frontal cells. These findings can be very helpful for the surgeons that want to deal with the treatment of RH.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
July 2019

Swollen Optic Disc and Sinusitis.

Case Rep Ophthalmol 2017 May-Aug;8(2):421-424. Epub 2017 Aug 3.

Anatomical-Clinical Laboratory for Functional Diagnosis and Treatment of Glaucoma and Neuroophthalmology, Eye Clinic, DiNOGMI, University of Genoa, Genoa, Italy.

Purpose: To present a case of optic disc swelling caused by sinusitis.

Methods: Ocular symptoms were investigated using computed tomography imaging of the facial bones to detect the relationship between the sinus inflammation and the optic nerve.

Results: A particular configuration of the optic nerve was detected. Optic nerve course through the inflamed sphenoidal sinus is a condition associated with a greater risk of inflammation.

Conclusion: Sinusitis is a rare but treatable cause of optic neuritis. The choice of the correct radiological investigation to be done to set up a proper treatment of the sinus pathological condition is also essential for the resolution of ocular symptoms.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
August 2017

Antibiotic Prophylaxis in Endoscopic Endonasal Pituitary and Skull Base Surgery.

World Neurosurg 2017 Oct 21;106:912-918. Epub 2017 Jul 21.

Center of Surgery for Pituitary Tumors and Endoscopic Skull Base Surgery, Department of Neurosurgery, Istituto di Ricovero e Cura a Carattere Scientifico - Istituto delle Scienze Neurologiche, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.

Objective: Postoperative infection is a potentially dramatic consequence in endoscopic endonasal surgery. The aim of this study was to assess the efficacy of our intraoperative antibiotic prophylaxis by analyzing the risk factors of postoperative meningitis in our series.

Methods: Each endoscopic endonasal procedure performed since 1998 in patients with no preoperative infections and a follow-up longer than 30 days were included and retrospectively reviewed. Antibiotic protocol consisted in single antibiotic administration of ampicillin/sulbactam 3 g or cefazolin 2 g on induction; no postoperative administrations were performed after 2005. All cases of cerebrospinal fluid (CSF) leak, meningitis, and systemic infection were recorded.

Results: Two thousand thirty-two procedures matched the inclusion criteria (median age 50 years; range: 1-89 years, male/female ratio: 1:1.12). Intraoperative CSF leak occurred in 32.8% of the cases and postoperative CSF leak in 3.4%. The rate of meningitis was 0.69%; other systemic infections were observed in 0.44% of cases. Meningitis was statistically associated with intra- and postoperative CSF leak (P < 0.001). Other risk factors were the intradural extension of the tumors and their malignant histology. Extended approaches producing wide osteodural defects were correlated with a greater risk of meningitis (P < 0.001).

Conclusions: All surgical maneuvers to prevent, detect, and quickly repair intra- and postoperative CSF leak are crucial to avoid postoperative meningitis. The proposed prophylaxis protocol is comparable in safety to those recommended in literature as assessed by the low rate of meningitis.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
October 2017