Journal of Cytology最新文献

Background: Meningiomas are generally slow-growing, benign, and non-infiltrating in nature. They are usually easy to diagnose cytologically if they are of the meningothelial type; however, they may cause diagnostic challenges when they manifest as unusual morphological variants, like the microcystic type. Because of the rarity of microcystic meningioma (MM), information on its cytological features is rarely available in the literature.

Objectives: The goal of this study is to review the cytological features of MM in crush preparations prepared at the time of intra-op consultation and to identify the more common features which are helpful in rendering a correct diagnosis.

Material and methods: Cytological features of five cases of MM were reviewed and noted from the records.

Results: There were five patients of MM with a male: female ratio of 1.5:1 and a mean age of 52 years. All tumors were supratentorial and dura-based. Magnetic resonance imaging (MRI) showed low signal intensity on T1 and high signal intensity on T2 weighted images in four cases. Cytosmears were moderate-to-highly cellular. There were variable-sized cystic spaces within the meningothelial cell clusters. In four cases, nuclear pleomorphism was frequently observed. Nuclear pseudoinclusions, atypical mitoses, vascular proliferation, and necrosis were absent in all cases. Whorling and psammoma bodies were seen in only one case.

Conclusion: Cytological features identified would be helpful in the diagnosis of microcystic meningiomas, especially in unusual radiological findings. Their unusual cytological features might lead to problems in differential diagnosis from other intracranial tumors, including glioblastoma, metastatic tumor, etc.

Background: A majority of the patients with gall bladder cancer (GBCa) present at an advanced stage and have poor survival. The aim is to retrospectively study the role of guided FNA in the diagnosis of GBCa in a superspecialty institute and to describe the cytomorphologic spectrum of gall bladder (GB) lesions in the North Indian population.

Materials and methods: All suspected cases of GBCa who underwent guided FNA from the primary GB mass or metastatic liver space-occupying lesion from 2017 to 2019 were included. The aspirate smears were retrieved and analyzed for cytomorphological features independently by two cytopathologists. The neoplastic lesions were classified according to the WHO 2019 classification.

Results: Of 489 cases, fine needle aspiration cytology (FNAC) was diagnostic in 463 cases (94.6%), of which 417 (90.1%) were positive for malignancy, 35 (7.5%) were inflammatory, and 11 (2.4%) were inconclusive for malignancy. Adenocarcinoma not otherwise specified (NOS) was the most common type seen in 330 cases (79.1%) and 87 (20.9%) were unusual variants. These included papillary adenocarcinoma (22, 5.2%), mucinous adenocarcinoma (12, 2.8%), signet ring carcinoma (2,0.4%), adenosquamous carcinoma (8, 1.9%), squamous cell carcinoma (10, 2.4%), neuroendocrine neoplasms (7, 1.7%), undifferentiated carcinoma (24, 5.7%) and non-Hodgkin lymphoma (2,0.4%), respectively. Immunohistochemistry on the cell block confirmed the diagnosis wherever possible. Histopathology was discordant in 5 out of 33 cases.

Conclusion: Guided FNAC is a sensitive investigation that plays a crucial role in confirming the diagnosis and deciding the further treatment options in advanced-stage GBCa patients. The uncommon variants of GBCa can be reliably categorized on cytology.

Introduction: The deposition of calcium in the skin is known as calcinosis cutis. It can affect any part of the body and can mimic soft tissue or bony lesions clinically.

Aim: To describe the clinical and cytomorphologic features of calcinosis cutis on fine needle aspiration cytology smears.

Materials and methods: A total of 17 cases reported as calcinosis cutis on fine needle aspiration cytology were reviewed for the available clinical and cytological details.

Results: The cohort included both adult and pediatric patients. Clinically, the lesions appeared as painless swellings of variable sizes. The common sites affected were the scrotum, iliac region, scalp, pinna, neck, axilla, elbow, arm, thigh, and gluteal region. Aspirate was chalky white, paste-like in all the cases. The cytologic evaluation revealed amorphous crystalline deposits of calcium along with histiocytes, lymphocytes, and multinucleated giant cells.

Conclusions: Calcinosis cutis has a wide spectrum of clinical presentations. Fine needle aspiration cytology is a minimally invasive approach for diagnosing calcinosis cutis, thus eliminating the need for more extensive biopsy procedures.