During rapid spread of coronavirus disease (COVID-19) globally, ever since WHO declared COVID-19 as pandemic, there have been various patterns of disease in terms of diagnosis, management and complications. Secondary infections are reportedly common in hospitalized and severely ill COVID-19 patients among which fungal being 10 times more common. Mucormycosis is amongst the most lethal form of Zygormycosis occurring in post COVID-19 patients. A varied patterns of disease involvement and spectrum of imaging features are observed in patients with mucormycosis in post COVID-19 patients. MRI has better efficacy than CT in detecting early invasion of mucormycosis. The goal of this review is to familiarize radiologists about the MR imaging spectrum of mucormycosis in post COVID-19 patients with potential diagnostic pitfalls in CT. Advances in knowledge: Radiological findings of mucormycosis in post COVID-19 patients show varied patterns of disease involvement and spectrum of imaging features. One should not solely rely on CT imaging to detect the extent of disease. MRI helps in early and accurate detection of invasion into adjacent structures and so helpful in early intervention.

There are a few signs in radiology which are based on many common objects or patterns that we come across in our routine lives. The objective behind the association between such common objects and the corresponding pathologies is to make the reader understand and remember the disease process. These signs do not necessarily indicate a particular disease, but are usually suggestive of a group of similar pathologies which will facilitate in the narrowing down of the differential diagnosis. These signs can be seen in different imaging modalities like plain radiograph and computed tomography. In this essay, we describe 24 classical radiological signs used in chest imaging, which would be extremely helpful in routine clinical practice not only for radiologists but also for chest physicians and cardiothoracic surgeons.

Perirenal lymphangiomatosis is a rare benign malformation of the lymphatic system. We report here a case of bilateral perirenal and parapelvic involvement with a normal excretory collecting system.

A B S T R A C T64-slice multidetector computed tomography (MDCT) allows more reliable and non-invasive evaluation of the coronary artery bypass grafts for occlusion or stenosis both in symptomatic and asymptomatic patients and also progression of disease in native coronary vessels.

Background A rare genetic disorder called Kallmann syndrome results from a defect in the neuronal migration of olfactory axons and gonadotropin-releasing hormone neurons. MR imaging helps in confirming the diagnosis of Kallmann syndrome with characteristic morphological findings in the brain, in clinically suspicious cases of hypogonadotropic hypogonadism with anosmia/hyposmia. Case presentation A 15-year-old male teenager presented with complaints of a small penis and anosmia. Hormonal assay of gonadotropins and testosterone revealed low serum concentrations. MRI brain revealed the absence of the olfactory bulbs in the olfactory grooves and hypoplastic olfactory sulcus. With the gonadotropic hormonal assay showing low levels and characteristic MR imaging features of absent olfactory tracts and olfactory sulcus, the diagnosis of Kallmann syndrome was confirmed. Conclusions Morphological abnormalities of olfactory tracts and olfactory sulcus can be accurately depicted with MR imaging through anterior fossa in the coronal plane. Therefore, MR imaging of the brain plays a significant role in diagnosing uncommon Kallmann syndrome and other associated brain abnormalities.