Cristian Constantin Popa

Dr. Cristian Constantin Popa

orcid

Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 April 2026 in Reports
Verified
Journal Article
Open access
PDF file
ATAlin Tatu
Alin Tatu
TTTiberiu Tebeica
Tiberiu Tebeica
MPMihaela Denisa Pirvu
Mihaela Denisa Pirvu
CPCristian Constantin Popa
Cristian Constantin Popa
VAValeriu Ardeleanu
Valeriu Ardeleanu
Background and Clinical Significance: Chondroid syringoma is a very rare tumor arising from the sweat glands, with an incidence described in the literature of 0.01% of all primary skin tumors. Case presentation: This paper aims to present the case of a patient treated in our clinic for a large cyst located at the inner corner of the left eye, which appeared two years ago and progressively increased in size. The patient presented for cosmetic reasons and discomfort, especially when wearing glasses. The diagnosis of chondroid syringoma is generally established clinically. The differential diagnosis includes other benign cutaneous lesions (pleomorphic adenoma, lipoma, neurofibroma, a dermoid cyst, dermatofibroma, pleomorphic adenoma of the salivary glands, a sebaceous cyst, or hemangioma) or malignant lesions (basal cell carcinoma, squamous cell carcinoma, or adenocarcinoma). Additional imaging investigations—CT and MRI—are rarely required and would mainly assess the extent of the lesion. Dermoscopy is an early differential diagnostic method, especially for small lesions of 1–3 mm, such as xanthelasma, milia, or basal cell carcinoma. Chondroid syringoma may be treated using minimally invasive methods such as fractional CO2 laser, radiofrequency, or electrocautery, but only when the lesion is superficial and small. For larger and deeper tumors, such as in our case, multiple treatment sessions would be required, increasing the cost, and complete removal would not be guaranteed. Conclusions: The chosen treatment is surgical excision with oncologic margins, followed by histopathological and immunohistochemical examination to prevent recurrence and assess the risk of malignancy.

2 October 2025 in Diagnostics
Verified
Journal Article
Open access
PDF file
MPMihaela Denisa Pirvu
Mihaela Denisa Pirvu
CPCristian Constantin Popa
Cristian Constantin Popa
ILIulian Lupu
Iulian Lupu
CGCatalin-Nicolae Grasa
Catalin-Nicolae Grasa
AGAnca T. Gheorghe
Anca T. Gheorghe
VSVasile Sârbu
Vasile Sârbu
Background and Clinical Significance: Iliopsoas abscess has recently become a condition quite frequently present in our practice, arising through hematogenous or lymphatic dissemination (primary), or secondary to trauma or infectious–inflammatory vertebral, renal, or gastrointestinal diseases. It is often diagnosed with difficulty, due to the insidious and rather atypical symptomatology. The simultaneous relevance to neurosurgery, orthopedics, urology, rheumatology, and of course surgery, makes the iliopsoas abscess a real challenge in diagnosis and treatment for any of us, as well as collaboration between specialties. Case Presentation: The aim of this paper is to illustrate all this through a rare clinical case of vertebral tuberculosis, with giant abscesses of bilateral iliopsoas and comparison with data from the literature, through a review. Conclusions: The problems were related to the clinical–paraclinical, etiological diagnosis, surgical strategy, technique and tactics, surgical approach, treatment and immediate, and both long-term postoperative management. The ultimate goal is to reduce morbidity and mortality secondary to this often-disabling condition.

4 February 2026 in Healthcare
Verified
Journal Article
Open access
PDF file
OCOvidiu Cristian Chiriac
Ovidiu Cristian Chiriac
MDMiricescu Daniela
Miricescu Daniela
RMRaluca Mititelu
Raluca Mititelu
SSSilviu Marcel Stanciu
Silviu Marcel Stanciu
Corina SporeaCorina Sporea
Corina Sporea
IVIleana Adela Adela Vacaroiu
Ileana Adela Adela Vacaroiu
Background/Objectives: Post-COVID-19 muscle weakness is common even after mild or moderate infection, driven by systemic inflammation, prolonged inactivity, and reduced functional reserve. This study aimed to describe changes in global muscle strength assessed using the Medical Research Council (MRC) scale in adults recovering from mild or moderate COVID-19 who participated in a structured two-week rehabilitation program, and to compare these changes with those observed under standard medical follow-up. Methods: This retrospective study included 193 adults recovering from mild or moderate COVID-19: 160 who completed a structured inpatient rehabilitation program (study group) and 33 who received no supervised rehabilitation (control group). Muscle strength was assessed using the MRC scale at baseline and at follow-up. Non-parametric analyses (Wilcoxon signed-rank test, Mann–Whitney U test, and Spearman correlation) were used to evaluate within-group changes, between-group differences, and associations with age and sex. Results: Both groups showed significant within-group improvements in muscle strength. In the study group, median MRC scores increased from 50 (IQR 40–56) to 52 (IQR 50–56), with a mean ΔMRC of 2.76 ± 8.72 (p < 0.001). In the control group, MRC scores rose from 50 (40–56) to 52 (43–56), corresponding to a mean ΔMRC of 1.00 ± 2.09 (p = 0.005). The between-group comparison of ΔMRC did not reach statistical significance overall; however, age-stratified analyses indicated greater muscle strength gains in the rehabilitation group among participants aged ≥60 years. Conclusions: Short-term improvements in global muscle strength were observed both after structured rehabilitation and under standard medical follow-up, indicating a substantial contribution of natural recovery. Although participants in the rehabilitation group showed numerically larger gains—most notably in the ≥60-year subgroup—between-group differences in ΔMRC were not statistically significant. Overall, these findings support the feasibility and potential functional value of early, individualized rehabilitation while underscoring the need for adequately powered prospective studies to clarify its incremental benefit beyond spontaneous recovery.

30 October 2026 in Life
Verified
Journal Article
Open access
PDF file
MPMihaela Denisa Pirvu
Mihaela Denisa Pirvu
CPCristian Constantin Popa
Cristian Constantin Popa
CGCătălin Nicolae Grasa
Cătălin Nicolae Grasa
CPCristian Gabriel Popescu
Cristian Gabriel Popescu
VAValeriu Ardeleanu
Valeriu Ardeleanu
(1) Background: The iliopsoas abscess is a rare condition with potentially severe evolution, secondary to hematogenous or lymphatic dissemination (primary) or secondary to trauma, vertebral, renal, or gastrointestinal infections. Due to its deep anatomical location and varied etiology, it represents a diagnostic and therapeutic challenge, requiring a multidisciplinary approach (surgery, neurosurgery, orthopedics, urology, imaging, infectious diseases, rheumatology, physical medicine, psychology and psychiatry). The aim is to synthesize the clinical and paraclinical particularities and to update modern diagnostic and treatment methods. (2) Methods: A narrative literature review was conducted using the PubMed, Scopus, and Web of Science databases, including relevant articles addressing the aspects mentioned above. Available evidence remains heterogeneous and is derived predominantly from retrospective and observational studies, limiting direct comparisons between treatment modalities. (3) Results: Elements of etiological, clinical, and paraclinical diagnosis are presented, together with complex therapeutic options, both medical and surgical. All modern drainage methods are highlighted, including interventional imaging, minimally invasive techniques, endoscopic treatment (laparoscopic and retroperitoneoscopic), direct drainage through the inferior lumbar triangle (Jean-Louis Petit), as well as open surgical treatment. Immediate and long-term postoperative management, physical and functional rehabilitation, and psychological and psychiatric support complete the multidisciplinary approach. (4) Conclusions: Ultimately, increasing awareness of this often-debilitating condition contributes to reducing morbidity and mortality.