Colon cancer patient with long-term colon stent placement: Case report and literature review.

Colorectal cancer (CRC) is the third most common cancer and the second leading cause of cancer mortality globally. Large bowel obstruction (occurring in 15-30% of patients with CRCs) accounts for approximately 80% of medical emergencies related to CRC. Currently, there is no standard treatment of this condition.

18F-FDG PET/CT Imaging in Sarcomatoid Hepatocellular Carcinoma.

Sarcomatoid hepatocellular carcinoma is a rare subtype of hepatocellular carcinoma. We present a 53-year-old man with a hepatic IV/VIII segment neoplasm whose tumor markers were all in the reference range. The neoplasm presented intense uptake of 18F-FDG and was confirmed as sarcomatoid hepatocellular carcinoma by immunohistochemistry.

Machine learning-based prediction of invisible intraprostatic prostate cancer lesions on Ga-PSMA-11 PET/CT in patients with primary prostate cancer.

Purpose:  Ga-PSMA PET/CT has high specificity and sensitivity for the detection of both intraprostatic tumor focal lesions and metastasis. However, approximately 10% of primary prostate cancer are invisible on PSMA-PET (exhibit no or minimal uptake). In this work, we investigated whether machine learning-based radiomics models derived from PSMA-PET images could predict invisible intraprostatic lesions on  Ga-PSMA-11 PET in patients with primary prostate cancer.

Role of ultrasound in the diagnosis of primary and recurrent dermatofibrosarcoma protuberans.

Background: Dermatofibrosarcoma protuberans (DFSP) is a rare, low- to intermediate-grade sarcoma, which represents a diagnostic imaging challenge. This study aimed to analyze the clinical and ultrasound features of primary and recurrent DFSP to improve the diagnosis.

Methods: Clinical, imaging, and pathological data from a total of 58 patients (23 patients with primary DFSP and 35 patients with recurrent DFSP) were retrospectively reviewed.

Risk Factors for Recurrence of Radically Resected Mucinous Colorectal Adenocarcinoma.

Background: Mucinous adenocarcinoma (MA) is a subtype of colorectal cancer (CRC) associated with a higher incidence of local extension and worse survival compared to non-mucinous adenocarcinoma, but few studies have investigated surgery-related predictors for recurrence of MA. Therefore, we aimed to elucidate the predictors for local recurrence and remote metastasis of MA after surgery.

Patients And Methods: This study retrospectively analyzed 162 patients with mucinous colorectal adenocarcinoma (MAC) after radical resection.

Clinical and Contrast-enhanced Ultrasound Characteristics of Epithelioid and Classic Hepatic Angiomyolipoma: Comparison With Alpha-fetoprotein-negative Hepatocellular Carcinoma.

Hepatic angiomyolipoma (HAML) comprises epithelioid angiomyolipoma (EAML) and classic hepatic angiomyolipoma (CAML). The imaging appearance of HAML varies widely, and EAML is more easily misdiagnosed as hepatocellular carcinoma (HCC) than as CAML. The clinical and contrast-enhanced ultrasound (CEUS) features of CAML, EAML and HCC with negative alpha-fetoprotein protein expression (HCC[AFP-]) were retrospectively reviewed.

Outcomes of Laparoscopic Surgery for Mucinous Colorectal Adenocarcinoma.

Mucinous colorectal adenocarcinoma (MAC) has a higher incidence of local extension, leading to lower overall resection rates. Few studies have investigated the outcomes of laparoscopic surgery for MACs to date. Therefore, we aimed to elucidate the validity of laparoscopic surgery for mucinous adenocarcinoma (MAC).

Semi-automatic evaluation of baseline whole-body tumor burden as an imaging biomarker of Ga-PSMA-11 PET/CT in newly diagnosed prostate cancer.

Objectives: The prognostic value of baseline tumor burden of prostate cancer was rarely studied. We aimed to evaluate the whole-body tumor burden of Ga- prostate specific membrane antigen-HBED-CC (Ga-PSMA-11) PET/CT in newly diagnosed prostate cancer semi-automatically, and explore its preliminary application in predicting prognosis.

Methods: Similar to metabolic tumor volume (MTV) and total lesion glycolysis (TLG) of F-FDG PET/CT, Ga-PSMA-11 PET/CT tumor burden parameters including whole-body PSMA tumor volume (wbPSMA-TV) and whole-body total lesions PSMA uptake (wbTL-PSMA) were acquired semi-automatically.

Diffuse Metastases in Bilateral Penile Corpus Cavernosum From Renal Cancer Diagnosed by 18F-FDG PET/CT.

We report a rare case of a 60-year-old man with diffuse metastases in bilateral penile corpus cavernosum after radical nephrectomy for left renal carcinoma. F-FDG PET/CT demonstrated diffuse hypermetabolic lesions in bilateral penile corpus cavernosum, hypermetabolic tumor recurrences in left renal operation region, and left pulmonary metastasis. Biopsy confirmed penile metastasis from renal clear cell carcinoma.

Semi-quantitative evaluation of salivary gland function in Sjögren's syndrome using salivary gland scintigraphy.

This retrospective study is designed to evaluate the diagnostic value of semi-quantitative parameters of salivary gland scintigraphy (SGS) in Sjögren's syndrome (SS) and explore the relationship between SGS parameters and salivary gland histopathologic manifestations. SGS and labial salivary gland biopsy were performed on 95 SS patients and 36 healthy age-matched and sex-matched volunteers. Uptake ratios at 15 min (UR(15)) and stimulated excretion fraction (EF) of each parotid and submandibular gland were calculated automatically from SGS; histopathologic grades were classified based on focal lymphocytic infiltration, and biopsy focus scores were calculated simultaneously.