99mTc-PSMA and 99mTc-FAPI-46 Uptake in Pulmonary Lymphangitic Carcinomatosis: A Rare Form of Metastasis in Prostate Cancer Patient, Responding to Modified Treatments.

This case report presents a rare instance of pulmonary lymphangitic carcinomatosis (PLC) in a prostate cancer patient, showcasing uptake of 99mTc-prostate-specific membrane antigen and 99mTc-fibroblast activation protein inhibitor-46 on imaging scans. A 70-year-old man with elevated serum prostate-specific antigen (PSA) levels exhibited respiratory symptoms and was diagnosed with widespread skeletal and pulmonary metastases. Following taxane-based chemotherapy and androgen deprivation therapy, imaging revealed decreased uptake and improvement in clinical symptoms, indicating treatment response.

A Rare Atypical Intrapericardial Prostate Adenocarcinoma Metastasis With 68 Ga-PSMA-11 PET/CT.

We report the case of an 88-year-old man recently diagnosed with prostate cancer. The patient underwent a 68 Ga-prostate-specific membrane antigen-11 PET/CT for staging assessment. This examination revealed intense and expected uptake in the primary prostate cancer, widespread metastatic involvement including typical adenopathy and bone metastasis, and a less common pulmonary lymphangitic carcinomatosis.

A rare case of disseminated rhinosporidiosis mimicking tuberculosis.

Rhinosporidiosis is one of the granulomatous diseases endemic in Asia, Africa, and Europe, with Southern India and Sri Lanka having the greatest prevalence rates. It is typically understood to affect the upper respiratory system. Involvement of the lungs beyond the trachea is infrequent as compared to the upper respiratory tract.

Postmortem Diagnosis of Gallbladder Cancer Presenting as Pulmonary Lymphangitic Carcinomatosis With Concurrent Gallbladder Adenomyomatosis.

In pulmonary lymphangitic carcinomatosis, it can be difficult to identify the primary site of the cancer on computed tomography (CT) imaging. Here, we report a rare case of pulmonary lymphangitic carcinomatosis, which was difficult to diagnose as gallbladder cancer. An 81-year-old woman, previously followed up for gallbladder adenomyomatosis, presented with persistent cough.

Clinical and Imaging Features of Non-Small Cell Lung Cancer with G12C KRAS Mutation.

KRAS G12C mutations are important oncogenic mutations that confer sensitivity to direct G12C inhibitors. We retrospectively identified patients with KRAS+ NSCLC from 2015 to 2019 and assessed the imaging features of the primary tumor and the distribution of metastases of G12C NSCLC compared to those of non-G12C KRAS NSCLC and NSCLC driven by oncogenic fusion events (RET, ALK, ROS1) and EGFR mutations at the time of initial diagnosis. Two hundred fifteen patients with KRAS+ NSCLC (G12C: 83; non-G12C: 132) were included.

18F-PSMA-1007 Uptake in Pulmonary Lymphangitic Carcinomatosis Metastasis From Prostate Cancer.

A 55-year-old man with cough, bone pain, and cervical lymphadenopathy underwent both 18F-FDG and 18F-PSMA-1007 PET/CT scans with clinical suspicion of malignant disease. Compared with 18F-FDG PET/CT, 18F-PSMA PET/CT showed intense tracer uptake in the prostate gland, lungs, osteogenic lesions, and multiple lymph nodes. Interestingly, we also found the high tracer concentration of pulmonary lymphangitic carcinomatosis, a very rare form of prostate cancer metastasis to the lung, on 18F-PSMA-1007 PET/CT images.

Micronodular lung disease on high-resolution CT: patterns and differential diagnosis.

With the advent of high-resolution computed tomography (HRCT), micronodular lung disease is a routinely encountered pathology in thoracic imaging. This article will review how to differentiate the three main micronodular patterns and review the differential diagnosis for each. Differential diagnosis of micronodular lung disease may be extensive, but by identifying the pattern and using additional clues, such as distribution, additional imaging findings, and clinical history, a radiologist can make an accurate diagnosis.