A case of adenoid cystic carcinoma of the prostate gland in a 38-year-old Korean man is described. Microscopically, variable patterns, that is, glandular, trabecular, cribriform and solid areas, were seen. The unusual location of this tumor in our patient highlights the ubiquitous distribution of this malignant neoplasm.
Adult ; Carcinoma, Adenoid Cystic/*pathology ; Human ; Male ; Prostatic Neoplasms/*pathology

Female ; Humans ; Carcinoma, Adenoid Cystic/pathology* ; Cervix Uteri/pathology* ; Uterine Cervical Neoplasms/pathology*

Carcinoma, Adenoid Cystic/pathology* ; Cervix Uteri/pathology* ; Female ; Humans ; Uterine Cervical Neoplasms/pathology*

Adenoid cystic carcinoma usually occurs in the salivary glands of the head and neck. It is a malignant tumor with a high degree of malignancy, resistance to radiotherapy and chemotherapy and poor prognosis. The clinical course of adenoid cystic carcinoma is slow and easy to be misdiagnosed. The main diagnosis and treatment means are individualized and precise treatment under the multi-disciplinary consultation mode, that is, surgical treatment and radiotherapy and chemotherapy. Adenoid cystic carcinoma is prone to relapse and hematologic metastasis, and the traditional radiotherapy and chemotherapy based therapies have not achieved satisfactory efficacy in the past three decades. How to detect, diagnose and treat early is an urgent task faced by clinicians.
Humans ; Carcinoma, Adenoid Cystic/pathology* ; Neoplasm Recurrence, Local ; Neck/pathology* ; Oropharynx/pathology* ; Diagnostic Errors

Objective:To assess the prognosis of sinonasal adenoid cystic carcinoma with hard palatine invasion treated by transnasal endoscopic total maxillectomy. Methods:Clinical data of twenty-six patients with sinonasal adenoid cystic carcinoma invading hard palatine treated by transnasal endoscopic total maxillectomy between May 2014 and December 2020 was analyzed retrospectively. Survival rate, local recurrence and distant metastasis were analyzed using Kaplan-Meier method. Cox regression was used to investigate the prognosis factors. Masticatory function after maxillectomy has also been assessed using the questionnaire of patients' satisfaction about masticatory function. Results:Margins in 8 patients（30%） were positive. The median time of follow-up was 38 months（6 to 85 months）. Twenty-five patients recurred. Four patients died of distant metastasis. The 5-year overall survival rate and relapse-free survival rate was 79.5% and 89.1%, respectively. Independent predictors of outcome on multivariate analysis were positive margin（P=0.018）, recurrence（P=0.006） and distant metastasis（P=0.04）. Conclusion:Transnasal endoscopic total maxillectomy could be performed for the treatment of the sinonasal adenoid cystic carcinoma with hard palatine invasion. Positive margin, local recurrence and distant metastasis were important predictors for patients' prognosis.
Humans ; Carcinoma, Adenoid Cystic/pathology* ; Paranasal Sinus Neoplasms/pathology* ; Retrospective Studies ; Neoplasm Recurrence, Local/pathology* ; Prognosis

Central malignant salivary gland tumor of the mandible is rarely observed with adenoid cystic carcinoma, which only comprises a small proportion of cancer patients. In this study, a patient with central adenoid cystic carcinoma of the mandible is presented, and relevant literature is reviewed.
Carcinoma, Adenoid Cystic ; diagnosis ; Humans ; Mandible ; pathology ; Salivary Gland Neoplasms ; diagnosis

OBJECTIVETo investigate the effect on adhesion and motion capbilities of adenoid cystic carcinoma (ACC), by detecting the expression of nerve growth factor (NGF), E-cadherin (E-cad) and S100A4 and the clinical significance in ACC tissues and analyzing the relationships between them with perineural invasion (PNI).

METHODSThe expression of NGF, E-cad and S100A4 in ACC was detected with the way of immunohistochemistry SP, and then analyzing the expression level of them in different pathological types and histological regions in statistical ways on the basis of their relation with clinical and pathological parameters.

RESULTSThe expression of NGF and S100A4 in PNI group [88% (23/26) and 77% (20/26)], was higher than that in NPNI group (8/16 and 7/16, P < 0.05), and a positive correlation between them was identified in PNI group (r = 0.316, P < 0.05). However the E-cad expression was lower in PNI group [31% (8/26), P < 0.05]. On the other hand it suggested a negative correlation with NGF (r = 0.385, P < 0.05) as well as that with S100A4 (r = -0.612, P = 0.000). The expression level of NGF in fasciculus [83% (25/30)] has significant deviation compared with it in distant tumor tissues [47% (14/30), P < 0.05].

CONCLUSIONSIn the PNI process of ACC, NGF plays important parts but not the only factor. It can increase the expression and activity of S100A4 but decrease E-cad expression through binding with its receptor. Thus, adhesion abilities of tumor cells was weakened and motional abilities was strengthen.

Cadherins ; biosynthesis ; Carcinoma, Adenoid Cystic ; pathology ; Cell Adhesion ; Cell Movement ; Humans ; Immunohistochemistry ; Nerve Growth Factor ; physiology

A patient with a history of adenoid cystic carcinoma of the nasal cavity presented himself with bone pain and an elevated PSA level. On suspicion of metastatic prostate cancer a ⁶⁸Ga-PSMA PET-CT was performed. The PET-CT showed numerous lung and non-sclerotic bone metastasis. Biopsy of a bone metastasis was performed and pathology showed adenoid cystic carcinoma instead of prostate cancer. Immunohistochemical PSMA staining of the primary tumour showed intense PSMA expression in adenoid cystic carcinoma tumour cells. Because of the high PSMA expression of adenoid cystic carcinoma, ⁶⁸Ga-PSMA PET-CT might be a promising imaging modality for this malignancy.
Adenoids ; Biopsy ; Carcinoma, Adenoid Cystic ; Humans ; Immunohistochemistry ; Lung ; Nasal Cavity ; Neoplasm Metastasis ; Pathology ; Prostatic Neoplasms

Adult ; Carcinoma, Adenoid Cystic ; complications ; Female ; Humans ; Thyroid Gland ; pathology ; Thyroid Neoplasms ; secondary ; Ultrasonography

Objective: To analyze the efficacy of sinonasal adenoid cystic carcinoma (ACC) with perineural invasion (PNI), and explore the prognostic value of PNI on sinonasal adenoid cystic carcinoma. Methods: The clinical data of 105 patients with sinonasal ACC admitted to Cancer Hospital, Chinese Academy of Medical Sciences from January 2000 to December 2016 were retrospectively reviewed. All patients were restaged according to American Joint Committee on Cancer 8th edition. Follow-up visits were conducted to obtain information of treatment failure and survival outcome. The Log rank test was used for univariate analysis of prognostic factors, and Cox regression model was used for multivariate prognostic analysis. Results: The maxillary sinus (n=59) was the most common primary site, followed by the nasal cavity (n=38). There were 93 patients with stage Ⅲ-Ⅳ. The treatment modalities included surgery alone (n=14), radiotherapy alone (n=13), preoperative radiotherapy plus surgery (n=10), and surgery plus postoperative radiotherapy (n=68). The median follow-up time was 91.8 months, the 5-year local control (LC), distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS) rates were 72.6%, 73.0%, 52.9% and 78.0%, respectively. There were 33 patients (31.4%) with PNI-positive. The 5-year DMFS, PFS, and OS rates of PNI-positive group were 53.7%, 29.4% and 56.5%, respectively, which were significantly inferior to those of PNI-negative group (80.8%, 63.0% and 86.8%, respectively, P<0.05), while there was no significant difference in the 5-year LC rate between both groups (64.5% vs 76.5%, P=0.273). The multivariate Cox regression analysis showed PNI was one of the poor prognostic factors of DMFS (HR=3.514, 95%CI: 1.557-7.932), PFS (HR=2.562, 95%CI: 1.349-4.866) and OS (HR=2.605, 95%CI: 1.169-5.806). Among patients with PNI-positive, the 5-year LC, PFS and OS rates of patients received surgery combined with radiotherapy were 84.9%, 41.3% and 72.7%, respectively, which were significantly higher than 23.3%, 10.0% and 26.7% of patients receiving surgery or radiotherapy alone (P<0.05). Conclusion: The presence of PNI increases the risk of distant metastasis in patients with sinonasal ACC. Compared with patients with PNI-negative, the prognosis of patients with PNI-positive is relatively poor, and surgery combined with radiotherapy for PNI-positive sinonasal ACC results in good clinical outcomes.
Carcinoma, Adenoid Cystic/pathology* ; Humans ; Paranasal Sinus Neoplasms/therapy* ; Prognosis ; Proportional Hazards Models ; Retrospective Studies