Adenoid cystic carcinoma metastatic to the kidney: a series of 10 patients emphasizing unilateral presentation and long time interval from primary diagnosis.

Adenoid cystic carcinoma (AdCC) metastasis to kidney is rare. We identified 10 patients with metastatic AdCC in multi-institutional collaboration. Core needle biopsy was the most common specimen (n = 6). Patients were predominately female (n = 7) with a median age of 48 years (35-62 years). The most common primary location of the AdCC was head and neck (n = 6, among them parotid gland = 4), followed by lung (n = 2), breast (n = 1), and vulva (n = 1). Median lapse between primary AdCC and renal metastasis was almost 13 years (154 months, range 1-336 months). Moreover, all but one patient had unilateral kidney metastasis. The majority of metastatic AdCC within the kidney demonstrated mixed growth patterns, frequently cribriform, and tubular morphology. Follow-up available for 8 patients showed 6 alive with disease and 2 died of disease (the longest survival was 4 years past the diagnosis of renal metastasis). A systematic literature review including 29 patients revealed that kidney metastasis by AdCC is usually a late event, is typically unilateral, and is usually composed of one to three foci, and thus has clinical features which mimic a primary renal tumor.

Kidney cancer with thyroid metastasis combined with thyroid carcinoma, a case report.

BACKGROUND: Thyroid cancer is the most common malignant tumor of the endocrine system. There have been some reports on kidney cancer with thyroid metastasis. However, kidney cancer has rarely been detected during thyroid cancer surgery. CASE PRESENTATION: We present a rare case of kidney cancer with thyroid metastasis, combined with thyroid carcinoma. A 66-year-old woman was admitted to our hospital in September 2021 due to enlarged left thyroid nodules for two years. The patient was diagnosed with a left thyroid nodule on physical examination in 2012. Extended radical resection of the thyroid cancer was performed. Intraoperatively, two thyroid lesions were identified. Thus, the patient was definitively diagnosed with kidney cancer with thyroid metastasis and papillary thyroid carcinoma. Furthermore, two metastatic nodules due to kidney cancer and one metastatic lymph node lesion due to thyroid cancer were found in the loose connective tissue adjacent to the thyroid. CONCLUSIONS: Kidney cancer with thyroid metastasis and thyroid carcinoma rarely co-occur, and it is difficult to identify the primary tumor. Although clinical examination methods are increasingly updated, the past medical history and physical examination are still very important.

Collision tumor of meningioma and metastatic renal clear cell carcinoma: a case report.

Distinct tumors in direct contact with one another are known as collision tumors and collision tumors of meningioma and metastatic renal cell carcinoma have not been previously reported. We report a 71-year-old female with a history of renal cell carcinoma who was presented with slow response and gait imbalance for 4 months. Brain MRI showed a mass in the base of right middle cranial fossa. The mass was completely removed. Histopathologic and radiographic findings provided evidence for a collision composed of meningioma and metastatic renal clear cell carcinoma.

Metastatic Thyroid Carcinoma to the Kidneys Presenting Initially as Bilateral Renal Masses: A Rare Case Report and Literature Review.

Thyroid cancers exist in multiple forms. Papillary and follicular carcinomas of the thyroid are often referred to as well-differentiated thyroid cancers. Well-differentiated thyroid cancers rarely present as a distant metastatic cancer on initial diagnosis. Papillary thyroid cancer tends to have a good prognosis; however, if distant metastasis of PTC is present, there is usually a poor clinical outcome with a less favorable prognosis. In this study, we report a 90-year-old female who presented with right-sided abdominal discomfort. A renal ultrasound revealed bilateral upper pole renal masses. A percutaneous biopsy was ordered, and the microscopic examination revealed bilateral renal metastasis with a follicular variant of papillary thyroid carcinoma. The patient underwent thyroidectomy and sustained radiation therapy for her bilateral renal metastases. She died 6 years after her initial diagnosis, due to sepsis. This is the second study in literature to report bilateral renal metastasis of follicular variant of papillary thyroid cancer.

A curious case of metastatic parotid adenoid cystic carcinoma to kidney.

A woman in her 60s presented with a 2-week history of non-specific left-sided abdominal pain. She previously underwent a total parotidectomy and adjuvant radiotherapy for left parotid adenoid cystic carcinoma 13 years prior, with a local recurrence 4 years after. Investigations revealed a large left-sided renal mass with appearances of renal carcinoma and no signs of metastatic disease. Pathology following nephrectomy revealed a metastatic adenoid cystic carcinoma.Metastatic disease recurred 11 months postradical nephrectomy to the contralateral kidney and lung, and she was referred to medical oncology for further management.This case history demonstrates the highly aggressive nature of an adenoid cystic carcinoma primary of salivary gland origin with rare metastasis to the kidney.

METASTATIC CHORIOCARCINOMA PRESENTING AS RENAL COLIC AND SKIN LESION - CASE REPORT.

OBJECTIVE: Choriocarcinoma is a rare malignant disease that is usually associated with a gestational event. Kidney metastasis might be misdiagnosed as renal cell carcinoma or kidney abscess. To the best of our knowledge, only 13 cases of cutaneous metastasis of choriocarcinoma have been reported in the literature so far. We report a case of choriocarcinoma that manifested with multiple metastases to the lung, skin, kidney and brain. Case report: We reported a case of a 37-year-old woman with a history of hydatiform mole, with symptoms of renal colic and abnormal findings on the skin. Chest X-ray revealed visible focal change 80 mm in diameter, located in the left lung area. The CT exposed in both kidneys multiple hypodense foci, 32 mm in size, suggesting multifocal abscesses with disruptions and perforation to paranephric area. Due to the presence of and temporary loss of vision in the right eye head CT was performed revealing metastatic changes in the brain. The diferential diagnosis between renal cancer, lung carcinoma and choriocarcinoma was achieved only after surgical removal skin lesion. This was the first time in our experience with choriocarcinoma. Immunohistochemically, the analysis was positive for beta hCG, cytokeratin AE1/AE, CK 8/18, CD10, EMA, alfa 1-inhibin and negative for protein 63, CD30 and CD117. Serum hCG level was 394590,0 mIU/mL. CONCLUSION: Conclusions: Choriocarcinoma should be taken into consideration when associated symptoms and significantly elevated blood levels of ß-hCG were identified.

Surgical treatment of liver and kidney metastasis from an adenoid cystic carcinoma of the submandibular gland: case report.

INTRODUCTION: Adenoid cystic carcinomas (ACCs) account for 10% of all malignant salivary tumours. They are slow-growing but locally aggressive. Reports of liver and renal metastases are rare. CASE DESCRIPTION: A 58-year-old woman who had undergone resection of a left submandibular ACC in 1995 was referred to our centre for follow-up in 2018. A computed tomography scan revealed two lesions: one on segment six of the liver and the other on a kidney. A hepatic wedge resection and right nephrectomy were performed. The postoperative course was uneventful. At 2-year follow-up, the patient was alive and well with no evidence of disease. CONCLUSION: Management of ACC is a therapeutic challenge because of its tendency for distant metastases. The literature recommends regular follow-up imaging and radical surgical treatment but specific guidelines for the approach to recurrence are lacking.

Secondary pneumothorax during immunotherapy in two patients with metastatic solid tumors; a new entity.

Background: We present two cases of secondary pneumothorax after immunotherapy in two different clinics. Case summary: A 25-year old female patient with metastatic osteosarcoma, treated with atezolizumab. Grade 2 pneumonitis developed twice in the first year. Treatment was continued after recovery and areas of pneumonitis and pneumothorax were observed on computed tomography. No other reason could be found to cause pneumothorax. Pneumothorax resorbed spontaneously during follow-up. A 36-year old female patient treated with nivolumab for metastatic renal cell carcinoma (RCC), areas of pneumonitis and pneumothorax were only found as the cause of dyspnea. After treatment, remission was achieved on computed tomography findings. Pneumothorax was detected for the second time during continued therapy, and immunotherapy stopped permanently. Conclusion: These cases, indicate that immunotherapy can cause secondary immune-related pneumothorax based on immune pneumonitis.

Lay abstract Immune checkpoint inhibitors are used with increasing frequency in cancer therapy. New side effects associated with these drugs have been identified. Air accumulation between the pleural membranes, which envelop the lungs and protect them in the ventilation function, without trauma may occur after using these drugs. We present here two cases that were treated with these drugs and developed this side effect. Patients with newly developed shortness of breath during this treatment should be careful about side effects such as this.

Contextual cues from cancer cells govern cancer-associated fibroblast heterogeneity.

Cancer cells function as primary architects of the tumor microenvironment. However, the molecular features of cancer cells that govern stromal cell phenotypes remain unclear. Here, we show that cancer-associated fibroblast (CAF) heterogeneity is driven by lung adenocarcinoma (LUAD) cells at either end of the epithelial-to-mesenchymal transition (EMT) spectrum. LUAD cells that have high expression of the EMT-activating transcription factor ZEB1 reprogram CAFs through a ZEB1-dependent secretory program and direct CAFs to the tips of invasive projections through a ZEB1-driven CAF repulsion process. The EMT, in turn, sensitizes LUAD cells to pro-metastatic signals from CAFs. Thus, CAFs respond to contextual cues from LUAD cells to promote metastasis.

Renal metastases from esophageal cancer and retroperitoneal lymphoma detected via chromosome duplications identified by fluorescence in situ hybridization in urine exfoliated cells: First 2 case reports.

RATIONALE: Renal-occupying lesions positive for urine fluorescence in situ hybridization (FISH) are usually considered urothelial carcinomas. Here, we describe 2 cases of renal metastases with chromosome duplications in urine exfoliated cells. PATIENT SYMPTOMS: Patient 1, a 56-year-old male with a history of esophageal cancer, was admitted to our hospital on May 2017 after presenting with right back pain with microscopic hematuria for 1 month. Magnetic resonance imaging (MRI) showed right renal space-occupying lesions (5.4 cm × 4.6 cm) and multiple enlarged lymph nodes in the right renal hilum and retroperitoneum. The cystoscopy results were negative, and FISH analysis of urine exfoliated cells was positive, indicative of chromosome 3, 7, and 17 amplifications. Patient 2 was a 50-year-old male who was admitted to our hospital on May 2019 with no obvious cause of abdominal pain and abdominal distension (lasting for 7 days), with a serum creatinine level of 844 µmol/L. Patient 2 had no hematuria or fever, and MRI showed left renal inferior and medial space-occupying lesions, and multiple mesenteric nodules at the junction of the left adrenal gland, retroperitoneum, abdomen, and pelvis, which were partially fused. The tumor lesions were approximately 3.1 cm × 2.3 cm in size. The urine FISH results were positive, indicating chromosome 3, 7, and 17 amplifications. DIAGNOSES: Both patients were diagnosed with renal tumors with unknown pathology. INTERVENTIONS: Patient 1 underwent laparoscopic resection of the kidney and ureter, and sleeve cystectomy. The postoperative pathological diagnosis was metastatic keratinized squamous cell carcinoma, with squamous cell carcinoma in the right hilar lymph node. Histological FISH of the primary esophageal cancer and renal metastases were consistent with the urine FISH test results. Patient 2 underwent a biopsy of the left renal inferior and retroperitoneal areas, and was diagnosed with diffuse large B-cell lymphoma. OUTCOMES: Patient 1 survived 6 months after urological surgery. After treating patient 2 with the R-CHOP regimen and kinase inhibitors, his renal function recovered significantly and the mass become undetectable. LESSONS: Our results imply that FISH-positive renal occupying lesions should be considered as potential renal metastases with chromosome aberrations when making a differential diagnosis.

Bilateral kidney metastases from adenoid cystic carcinoma of lung: a case report and literature review.

Adenoid cystic carcinoma (ACC) is a rare malignant tumor, usually arising from salivary glands and rarely found in other locations. ACC is characterized by asymptomatic course, slow growth pattern, perineural invasion and high incidence of late metastasis. Renal localization of metastasis is rare. Only 12 cases of renal metastasis were published and, to our best knowledge, no case of bilateral metastasis to the kidney has ever been reported. We present a case of a 58 years old woman with bilateral renal metastasis from ACC of the right lung after fourteen years from lobectomy and radiotherapy for the primary presentation. The patient underwent bilateral robot-assisted partial nephrectomy in a two-stage approach. Despite its rare incidence and slow growth, ACC metastasis may simulate primary papillary renal carcinoma and occur many years after primary treatment. Therefore, lifelong follow-up, including abdominal imaging, is recommended.

COL5A2 as a potential clinical biomarker for gastric cancer and renal metastasis.

BACKGROUND: Gastric cancer, characterized by insidious onset and multiple metastasis, is almost incurable and has poor prognosis, and also one of the leading causes of treatment failure and death in patients with gastric cancer (GC). However, the prognosis of collagen type V alpha2 chain (COL5A2) in GC and renal metastasis is unknown. METHODS: Recruited 148 patients who underwent GC. The diagnosis of GC was confirmed by ultrasound imaging and pathological examination. Immunohistochemistry and RT-qPCR were performed to exam the expression level of COL5A2. The statistical methods included Pearson chi-square test, Spearman-rho correlation test, univariate and multivariate cox regression analysis. Finally, this research constructed receiver operating characteristic (ROC) curves and applied the area under the curve (AUC). RESULTS: Based on Pearson's chi-square test, Spearman-rho test, and univariate/multivariate cox regression, pathologic grade (P < .001), renal metastasis (P < .001) and staging (P < .001) were significantly related to COL5A2. And COL5A2 expression (hazard ratio [HR]: 18.834, P < .001) is an independent risk factor of GC. The AUC was used as the degree of confidence in judging each factor: COL5A2 (AUC = 0.878, P < .001), COL1A1 (AUC = 0.636, P = .006), COL1A2 (AUC = 0.545, P = .368), and COL3A1 (AUC = 0.617, P = .019). Through the ROC result, COL5A2 had more advantage as a biomarker for GC than other collagens. CONCLUSIONS: COL5A2 gene expression level might be a risk factor for GC. COL5A2 has a strong correlation with the prognosis of the disease.

Polyostotic osteosarcoma associated with avian leukosis virus infection in a captive bare-faced curassow (Crax fasciolata).

BACKGROUND: Osteosarcoma is a malignant mesenchymal bone tumor. Although it is a common tumor in the appendicular skeleton of dogs and cats, it is rarely reported in birds. Retroviruses are usually associated with solid tumor development in different avian species. CASE PRESENTATION: This report aims to describe a case of osteosarcoma associated with the avian leukosis virus in a captive bare-faced curassow (Crax fasciolata). A captive adult female bare-faced curassow presented with lameness, hyporexia, and a non-ulcerative and firm tumor in the right femur. The bird was euthanized due to the poor prognosis. Histopathology revealed an infiltrative mesenchymal neoplasm consisting of spindle cells with moderate cell pleomorphism, organized in bundles and interspersed by marked deposition of the osteoid matrix, which was compatible with osteosarcoma affecting both femur and tibiotarsus, with renal metastasis. Immunohistochemistry of the primary and metastatic tumor demonstrated vimentin expression by neoplastic cells. Samples of the neoplasm, bone marrow, and spleen were processed for PCR, which enabled the demonstration of proviral avian leukosis virus (ALV) DNA. CONCLUSIONS: To the best of our knowledge, this is the first report of an osteosarcoma in a bare-faced curassow with an unusual polyostotic manifestation and associated with ALV infection.

Increased expression of adenosine 2A receptors in metastatic renal cell carcinoma is associated with poorer response to anti-vascular endothelial growth factor agents and anti-PD-1/Anti-CTLA4 antibodies and shorter survival.

BACKGROUND: Adenosine and its adenosine 2A receptors (A2AR) mediate the immunosuppressive mechanism by which tumors escape immunosurveillance and impede anti-tumor immunity within the tumor microenvironment. However, we do not know whether the adenosine pathway (CD39/CD73/A2AR) plays a role in renal cell carcinoma (RCC). Therefore, we studied the role of immunosuppression in RCC by assessing the adenosine pathway in patients with RCC treated with anti-vascular endothelial growth factor (anti-VEGF) agents or immune checkpoints inhibitors (ICIs) or both. METHODS: In 60 patients with metastatic RCC, we examined the expression of CD39, CD73, A2AR, and programmed cell death 1 ligand 1 (PD-L1) immunohistochemically in surgically resected tumor tissues and studied the clinicopathological characteristics of these patients. Patients were treated by cytoreductive nephrectomy with systemic therapy with anti-VEGF agent or a combination of the ICIs anti-cytotoxic T-lymphocyte-associated antigen 4 (CTLA4) antibody and programmed cell death 1 (PD-1) antibody. RESULTS: Increased expression of A2AR in the primary tumors was associated with metastatic profiles. Patients treated with anti-PD-1 antibody in monotherapy, a combination of anti-PD-1 and anti-CTLA4 antibodies, or anti-VEGF agents showed better response and longer overall survival if the primary tumor had higher PD-L1 expression and lower A2AR expression. In Cox multivariate regression analysis, higher expression of A2AR was associated with shorter overall survival. CONCLUSIONS: Our findings suggest that the expression of A2AR and PD-L1 in the primary tumors in RCC might predict the outcomes of treatment with anti-VEGF agents and ICIs and that the A2AR pathway might be a molecular target for immunotherapy.

Spontaneous subcapsular and perirenal haemorrhage with retroperitoneal haematoma in a patient with ovarian melanoma metastases.

A 47-year-old woman was admitted to our clinic for intensive pain in the left flank region. The transvaginal ultrasound showed a left adnexal solid mass with ascites. She had undergone surgical removal of skin melanoma in 2008, but in September 2019, intracardiac metastasis resulting from it had been discovered. CT performed in March 2020 had been negative for other metastases. A full abdomen ultrasound was not performed. During the night, the patient began to show signs and symptoms of hypovolaemic shock. The patient was urgently transferred to the operating room for a video laparoscopy. A vast left retroperitoneal haematoma was diagnosed along with voluminous enlargement of the left ovary. We proceeded with a left adnexectomy and blood transfusion. Subsequent contrast-enhanced CT revealed a left subcapsular, perirenal haematoma and a voluminous retroperitoneal haematoma. Kidney metastasis was also seen. The final histological diagnosis was metastatic amelanotic malignant melanoma of the ovary.

Histopathologic Correlates of Kidney Function: Insights From Nephrectomy Specimens.

RATIONALE & OBJECTIVE: Existing data sets correlating kidney histopathologic findings with kidney function have low proportions of elderly patients (and those with a family history of kidney failure are over-represented), which limits their generalizability. Our objective was to use non-neoplastic tissue from nephrectomy specimens to examine the association between degree of histopathologic changes and estimated glomerular filtration rate (eGFR) and determine whether the association differed by age. STUDY DESIGN: Cross-sectional study. EXPOSURES: Glomerulosclerosis (GS), interstitial fibrosis/tubular atrophy (IFTA), and arterial sclerosis/arteriosclerosis (AS). OUTCOME: eGFR. ANALYTICAL APPROACH: We retrospectively reviewed kidney pathology reports (of non-neoplastic tissue) from 1,347 patients who underwent nephrectomy (1999-2018) for any indication but most commonly due to kidney cancer. We evaluated the association between degree of GS, IFTA, and AS with eGFR at the time of nephrectomy and whether this was modified by age. RESULTS: Among the participants (aged 17-91 years), 42% and 57.8% had>10% GS and IFTA, respectively, and 81.8% had moderate or severe AS. We found that greater degrees of GS, IFTA, and AS were associated with lower eGFR after multivariable adjustment. Although there was a greater prevalence of more severe degrees of GS and IFTA in older individuals, the association between various histopathologic features and eGFR was not modified by age. LIMITATIONS: Retrospective cross-sectional study. CONCLUSIONS: Our study demonstrates differences in the histologic appearance of the kidneys across levels of eGFR. Although the prevalence of advanced changes was higher in the oldest group of patients, a subset had excellent kidney function and limited histologic changes.

Extensive bilateral renal metastases of non-small cell lung carcinoma caused acute kidney injury resulting in end-stage renal disease.

Non-small cell lung carcinoma unusually causes clinically relevant metastases in the kidney while they are usually found only in autopsy. Acute kidney injury (AKI) due to direct metastatic invasion of a solid tumor is also very rare whereas it usually happens with hematologic malignancy, including lymphoma. We report a case with these two rarities. A 54-year-old man who had a 6.7 × 6.0 cm-sized tumor in the left upper lobe of the lung in computed tomography was diagnosed as squamous cell lung carcinoma with bronchoscopy with biopsy. His renal function was normal and no proteinuria or hematuria was recognized. He underwent left upper lobectomy and the pathologic examination revealed pT4N1M0 stage IIIA disease. Four months after the surgery, a single brain metastasis in the right frontal lobe found in brain magnetic resonance imaging was treated with Gamma Knife radiosurgery. He presented with macroscopic hematuria and AKI (the serum creatinine level was 1.35 mg/dL) nine months after surgery. The cause was enormous bilateral renal metastases, maximally 8 cm-sized lesions with poor enhancement, which were found in enlarged bilateral kidneys in enhanced CT. Intrapulmonary metastatic lesions were also newly detected. Chemotherapy with pembrolizumab, an antibody against anti-programmed cell death protein 1, had little effect and his renal function continued to decline rapidly, resulting in end-stage renal disease and maintenance hemodialysis. Chemotherapy with carboplatin and paclitaxel was additionally performed. However, two months after hemodialysis induction, the patient died with pneumonia and acute respiratory distress syndrome.